feat(toggle): Adding docs for the toggle command (#13487)

## DESCRIBE YOUR PR
This change adds documentation for the new toggle command in devservices
and outlines how/when it is used.

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## PRE-MERGE CHECKLIST

*Make sure you've checked the following before merging your changes:*

- [ ] Checked Vercel preview for correctness, including links
- [ ] PR was reviewed and approved by any necessary SMEs (subject matter
experts)
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team](https://github.com/orgs/getsentry/teams/docs)

---------

Co-authored-by: Hubert Deng <[email protected]>

Author: IanWoodard

develop-docs/development-infrastructure/devservices.mdx

@@ -11,8 +11,8 @@ usage: devservices [-h] [--version] COMMAND ...
 CLI tool for managing service dependencies.
 
 options:
-  -h, --help            show this help message and exit
-  --version             show program's version number and exit
+  -h, --help          show this help message and exit
+  --version           show program's version number and exit
 
 commands:
   up                  Bring up a service and its dependencies
@@ -23,6 +23,7 @@ commands:
   logs                View logs for a service
   update              Update devservices to the latest version
   purge               Purge the local devservices cache
+  toggle              Toggle how a service is run
 ```
 
 ## Installation
@@ -81,6 +82,26 @@ Common modes:
 devservices up --mode symbolicator
 ```
 
+## Running a dependency locally
+
+If you want to run a dependency locally rather than as a container, you can do so by toggling the runtime to LOCAL.
+
+For example, if you are running Sentry and want to use your local Snuba, you can do the following:
+
+```shell
+devservices toggle snuba LOCAL
+```
+
+This will tell devservices to not bring up snuba and its dependencies, allowing you to run snuba locally instead.
+
+To toggle the runtime back to using the container, you can do the following:
+
+```shell
+devservices toggle snuba CONTAINERIZED
+```
+
+If you don't provide a runtime when toggling, it will toggle to the opposite of the current runtime.
+
 ## Migrating data from the deprecated `sentry devservices`
 
 <Alert level="warning" title="Important">