Add new configuration document for connection discord (#101)

docs/reference/config-files/connection/discord.md

@@ -0,0 +1,38 @@
+---
+title: discord
+sidebar_label: discord
+---
+
+# discord
+
+The `discord` connection can be used to access Discord resources.
+
+```hcl
+connection "discord" "my_discord" {
+  token = "00B630jSCGU4Fake5Yh4KQMFakezwE2OgVcS7N999b"
+}
+```
+
+## Arguments
+
+| Name    | Type   | Required? | Description |
+| ------- | ------ | --------- | ----------- |
+| `token` | String | Optional  | API token   |
+
+All arguments are optional, and a `discord` connection with no arguments will behave the same as the [default connection](#default-connection).
+
+## Attributes (Read-Only)
+
+| Attribute | Type | Description                                                                      |
+| --------- | ---- | -------------------------------------------------------------------------------- |
+| `env`     | Map  | A map of the resolved connection-related environment variables (`DISCORD_TOKEN`) |
+
+## Default Connection
+
+The `discord` connection type includes an implicit, default connection (`connection.discord.default`) that will be configured to set the `token` to the `DISCORD_TOKEN` environment variable.
+
+```hcl
+connection "discord" "default" {
+  token = env("DISCORD_TOKEN")
+}
+```