Remove hello world packages and documentation

Makefile

@@ -229,7 +229,6 @@ fix-abci-app-specs:
 	autonomy analyse fsm-specs --update --app-class AgentRegistrationAbciApp --package packages/valory/skills/registration_abci || (echo "Failed to check registration_abci consistency" && exit 1)
 	autonomy analyse fsm-specs --update --app-class ResetPauseAbciApp --package packages/valory/skills/reset_pause_abci || (echo "Failed to check reset_pause_abci consistency" && exit 1)
 	autonomy analyse fsm-specs --update --app-class RegisterResetAbciApp --package packages/valory/skills/register_reset_abci || (echo "Failed to check register_reset_abci consistency" && exit 1)
-	autonomy analyse fsm-specs --update --app-class HelloWorldAbciApp --package packages/valory/skills/hello_world_abci || (echo "Failed to check hello_world_abci consistency" && exit 1)
 	autonomy analyse fsm-specs --update --app-class TransactionSubmissionAbciApp --package packages/valory/skills/transaction_settlement_abci || (echo "Failed to check transaction_settlement_abci consistency" && exit 1)
 	autonomy analyse fsm-specs --update --app-class OffendAbciApp --package packages/valory/skills/offend_abci || (echo "Failed to check offend_abci consistency" && exit 1)
 	echo "Successfully validated abcis!"

docs/advanced_reference/commands/autonomy_analyse.md

@@ -12,7 +12,7 @@ This command verifies that the [`AbciApp` class](../../key_concepts/abci_app_cla
 
 ??? example
 
-    The docstring corresponding to the [Hello World agent service](../../demos/hello_world_demo.md) is
+    The docstring corresponding to the [Hello World agent service](https://docs.autonolas.network/demos/hello-world/) is
 
 
     ```python
@@ -23,20 +23,20 @@ This command verifies that the [`AbciApp` class](../../key_concepts/abci_app_cla
     Initial states: {RegistrationRound}
 
     Transition states:
-        0. RegistrationRound
+        1. RegistrationRound
             - done: 1.
-        1. CollectRandomnessRound
+        2. CollectRandomnessRound
             - done: 2.
             - no majority: 1.
             - round timeout: 1.
-        2. SelectKeeperRound
+        3. SelectKeeperRound
             - done: 3.
             - no majority: 0.
             - round timeout: 0.
-        3. PrintMessageRound
+        4. PrintMessageRound
             - done: 4.
             - round timeout: 0.
-        4. ResetAndPauseRound
+        5. ResetAndPauseRound
             - done: 1.
             - no majority: 0.
             - reset timeout: 0.

docs/advanced_reference/commands/autonomy_fetch.md

@@ -55,5 +55,5 @@ autonomy --registry-path=./packages fetch valory/hello_world:0.1.0 --service --l
 
 Fetch the agent service `hello_world` from a remote registry ([IPFS](https://ipfs.io)):
 ```bash
-autonomy fetch valory/hello_world:0.1.0:bafybeieoqhbwqmg5oiqgkxf6dlizncjvaermwtun4aijqcbyc6ulfl7o4q --service --remote
+autonomy fetch valory/hello_world:0.1.0:bafybeicdcrhpekqbwzeam2fi7npnl6qfwejgo73ftwoy4tofwbrsl5ene4 --service --remote
 ```

docs/configure_service/analise_test.md

@@ -50,8 +50,7 @@ The `valory/abstract_round_abci` skill packages come with a number of testing to
     Fetch the `hello_world` agent, which comes with the `hello_world_abci` {{fsm_app}} skill within:
 
     ```bash
-    autonomy fetch valory/hello_world:0.1.0:bafybeibwluqq2yywd3stax2kuiqnv4zxxu3rprfkbn7f7e6sf2gelpkdqa
-    mv hello_world hello_world_agent
+    autonomy fetch valory/hello_world:0.1.0:bafybeiakoj6jpj5gqyjk5qz2ibgvplgd4azqwxmi56aei7xpu5z47np3e4 --alias hello_world_agent
     ```
 
     Look at the unit tests for the `hello_world_abci` skill, located in the folder
@@ -77,8 +76,7 @@ The same plugin also provides tools for writing end-to-end tests for agents. The
     Fetch the `hello_world` agent:
 
     ```bash
-    autonomy fetch valory/hello_world:0.1.0:bafybeibwluqq2yywd3stax2kuiqnv4zxxu3rprfkbn7f7e6sf2gelpkdqa
-    mv hello_world hello_world_agent
+    autonomy fetch valory/hello_world:0.1.0:bafybeiakoj6jpj5gqyjk5qz2ibgvplgd4azqwxmi56aei7xpu5z47np3e4 --alias hello_world_agent
     ```
 
     Look at the end-to-end tests, located in the folder

docs/configure_service/service_configuration_file.md

@@ -7,7 +7,7 @@ The service configuration file `service.yaml` is typically composed of service-s
 
 ???+ example
 
-    Here is an example of the service configuration file of the [Hello World service](../demos/hello_world_demo.md):
+    Here is an example of the service configuration file of the [Hello World service](https://docs.autonolas.network/demos/hello-world/):
 
     ```yaml title="service.yaml"
     name: hello_world
@@ -96,7 +96,7 @@ The {{open_aea}} framework already has the notion of [component overrides](https
 Similarly, the {{open_autonomy}} framework has the notion of service-level overrides. You can define them in the service configuration file `service.yaml`, which will be used to generate the deployment environment for the agents.
 
 Service-level overrides follow the mandatory service-specific attributes, separated by `---`.
-You can, for example, override the default `HELLO_WORLD!` string that each agent prints on their console in the [Hello World service](../demos/hello_world_demo.md), which is originally defined in the `hello_world_abci` skill.
+You can, for example, override the default `HELLO_WORLD!` string that each agent prints on their console in the [Hello World service](https://docs.autonolas.network/demos/hello-world/), which is originally defined in the `hello_world_abci` skill.
 
 ```yaml title="service.yaml"
 name: hello_world
@@ -163,7 +163,7 @@ type: skill
 
 ???+ example
 
-    If you wish that each agent outputs a different message in the [Hello World service](../demos/hello_world_demo.md) with four agents, you can define the following multiple override in the `service.yaml` file:
+    If you wish that each agent outputs a different message in the [Hello World service](https://docs.autonolas.network/demos/hello-world/) with four agents, you can define the following multiple override in the `service.yaml` file:
 
     ```yaml title="service.yaml"
     # (...)