Cleanup docs so that each as a single H1 title (#1794)

* This fixes the way the documents appear in the TOC

## By Submitting this PR I confirm:
- I am familiar with the [Contributing Guidelines](https://github.com/nv-morpheus/Morpheus/blob/main/docs/source/developer_guide/contributing.md).
- When the PR is ready for review, new or existing tests cover these changes.
- When the PR is ready for review, the documentation is up to date with these changes.

Authors:
  - David Gardner (https://github.com/dagardner-nv)

Approvers:
  - Eli Fajardo (https://github.com/efajardo-nv)

URL: #1794

docs/source/examples/llm/index.rst

@@ -22,9 +22,12 @@ LLM
 .. toctree::
    :maxdepth: 20
 
-   ./README.md
    ./completion/README.md
    ./vdb_upload/README.md
    ./rag/README.md
    ./agents/README.md
 
+.. toctree::
+   :hidden:
+
+   ./README.md

examples/doca/README.md

@@ -28,7 +28,7 @@ The container must be run in privileged mode and mount in hugepages as configure
 docker run -v /dev/hugepages:/dev/hugepages --privileged --rm -ti --runtime=nvidia --net=host --gpus=all --cap-add=sys_nice ${MORPHEUS_DOCA_IMAGE} bash
 ```
 
-# Preparing the environment
+## Preparing the environment
 
 Prior to running the example, the `rdma-core` conda package needs to be _removed by force_ from the conda environment, otherwise the environment is incompatible with the DOCA-provided packages.
 ```
@@ -170,9 +170,8 @@ Added stage: <monitor-9; MonitorStage(description=AddClass rate, smoothing=0.05,
 Stopping pipeline. Please wait... Press Ctrl+C again to kill.
 DOCA GPUNetIO rate: 0 pkts [00:09, ? pkts/s]
 Deserialize rate: 0 pkts [00:09, ? pkts/s]
-Tokenize rate: 0 pkts [00:09, ? pkts/s] 
+Tokenize rate: 0 pkts [00:09, ? pkts/s]
 Inference rate: 0 pkts [00:09, ? pkts/s]
 AddClass rate: 0 pkts [00:09, ? pkts/s]
 ```
 The output can be found in `doca_output.csv`
-

examples/llm/agents/README.md

@@ -43,7 +43,7 @@ All environments require additional Conda packages which can be installed with e
 | Morpheus Release Container | ✔ |  |
 | Dev Container | ✔ |  |
 
-# Background Information
+## Background Information
 
 ### Purpose
 The Morpheus LLM Agents pipeline is designed to seamlessly integrate Large Language Model (LLM) agents into the Morpheus framework. This implementation focuses on efficiently executing multiple LLM queries using the ReAct agent type, which is tailored for versatile task handling. The use of the Langchain library streamlines the process, minimizing the need for additional system migration.

examples/llm/completion/README.md

@@ -15,6 +15,8 @@ See the License for the specific language governing permissions and
 limitations under the License.
 -->
 
+# Completion Pipeline
+
 ## Table of Contents
 
 1. [Background Information](#background-information)