Fix broken Markdown links (#536)

While running locally, I noticed a couple of broken links by searching
the codebase for `] (`. That is, a Markdown-encoded link with a space
between the `[text]` and `(url)`.

Live, https://sourcegraph.com/docs/admin/deploy/docker-compose
<img width="654" alt="image"
src="https://github.com/user-attachments/assets/e370e0a6-8812-4ef2-90c0-648c6c817184">

Locally, http://localhost:3000/admin/deploy/docker-compose

<img width="465" alt="image"
src="https://github.com/user-attachments/assets/fcf7489d-8cf0-4c32-a7dc-e6588618e05f">


## Pull Request approval

Although pull request approval is not enforced for this repository in
order to reduce friction, merging without a review will generate a
ticket for the docs team to review your changes. So if possible, have
your pull request approved before merging.

Co-authored-by: Maedah Batool <[email protected]>

Author: chrsmith

docs/admin/deploy/docker-compose/index.mdx

@@ -33,7 +33,7 @@ A step by step guide to install Sourcegraph with Docker Compose.
 
 ### Overview
 
- 1. [Fork the deployment repository](#step-1-fork-the-deployment-repository) (recommended)
+ 1. [Fork the deployment repository (recommended)](#step-1-fork-the-deployment-repository)
  2. [Customize the instance](#step-2-configure-the-instance)
  3. [Clone the release branch](#step-3-clone-the-release-branch)
  4. [Build and start the Sourcegraph containers](#step-4-start-sourcegraph)

docs/cody/usage-and-pricing.mdx

@@ -96,7 +96,7 @@ We don't offer refunds, but if you have any queries regarding the Cody Pro plan,
 
 ### How do I access previous invoices?
 
-You can access your invoices via the [Cody Dashboard] (https://sourcegraph.com/cody/manage) and clicking "Manage Subscription". 
+You can access your invoices via the [Cody Dashboard](https://sourcegraph.com/cody/manage) and clicking "Manage Subscription".
 
 ## Enterprise