Update links to stay within Ruby LSP docs (#3263)

* Update troubleshooting links

* Use relative links

* Remove .html extension

Author: Andy Waite

jekyll/add-ons.markdown

@@ -11,7 +11,7 @@ parent: Ruby LSP
 > The Ruby LSP add-on system is currently experimental and subject to changes in the API
 
 Need help writing add-ons? Consider joining the `#ruby-lsp-addons` channel in the [Ruby DX Slack
-workspace](https://shopify.github.io/ruby-lsp/invite).
+workspace](invite).
 
 ## Motivation and goals
 

jekyll/index.markdown

@@ -15,7 +15,7 @@ for Ruby, used to improve rich features in editors. It is a part of a wider goal
 experience to Ruby developers using modern standards for cross-editor features, documentation and debugging.
 
 Want to discuss Ruby developer experience? Consider joining the public
-[Ruby DX Slack workspace](https://shopify.github.io/ruby-lsp/invite).
+[Ruby DX Slack workspace](invite).
 
 ## Table of Contents
 
@@ -69,7 +69,7 @@ If using VS Code, all you have to do is install the [Ruby LSP
 extension](https://marketplace.visualstudio.com/items?itemName=Shopify.ruby-lsp) to get the extra features in the
 editor. Do not install the `ruby-lsp` gem manually.
 
-For more information on using and configuring the extension, see the [extension page](vscode-extension.html).
+For more information on using and configuring the extension, see the [extension page](vscode-extension).
 
 ### With other editors
 
@@ -531,7 +531,7 @@ requirements
 ## Experimental Features
 
 Ruby LSP also provides experimental features that are not enabled by default. If you have feedback about these features,
-you can let us know in the [DX Slack](https://shopify.github.io/ruby-lsp/invite) or by [creating an issue](https://github.com/Shopify/ruby-lsp/issues/new/choose).
+you can let us know in the [DX Slack](invite) or by [creating an issue](https://github.com/Shopify/ruby-lsp/issues/new/choose).
 
 ### Ancestors Hierarchy Request
 
@@ -571,7 +571,7 @@ default gems, except for
 - Gems that only appear under the `:development` group
 - All Ruby files under `test/**/*.rb`
 
-This behavior can be overridden and tuned. Learn how to configure it [for VS Code](https://github.com/Shopify/ruby-lsp/tree/main/vscode#indexing-configuration).
+This behavior can be overridden and tuned. Learn how to configure it [for VS Code](vscode-extension#indexing-configuration).
 
 Note that indexing-dependent behavior, such as definition, hover, completion or workspace symbol will be impacted by
 the configuration changes.

jekyll/troubleshooting.markdown

@@ -30,7 +30,7 @@ As an example, the activation script for `zsh` using `rbenv` as a version manage
 
 After activating the Ruby version, we then proceed to boot the server gem (`ruby-lsp`). To avoid having users include
 the `ruby-lsp` in their `Gemfile`, we create a [composed
-bundle](https://shopify.github.io/ruby-lsp/composed-bundle.html) under the `.ruby-lsp` directory inside your project.
+bundle](composed-bundle) under the `.ruby-lsp` directory inside your project.
 
 ## Common issues
 
@@ -172,7 +172,7 @@ One scenario where this is useful is if the user doesn't have permissions for th
 
 ### Developing on containers
 
-See the [documentation](https://github.com/Shopify/ruby-lsp/tree/main/vscode#developing-on-containers).
+See the [documentation](vscode-extension#developing-on-containers).
 
 ## Diagnosing the problem
 
@@ -184,7 +184,7 @@ manner. Please include the steps taken to diagnose in your bug report.
 
 Check the [status center](https://github.com/Shopify/ruby-lsp/blob/main/vscode/extras/ruby_lsp_status_center.png).
 Does the server status say it's running? If it is running, but you are missing certain features, please check our
-[features documentation](https://shopify.github.io/ruby-lsp/#general-features) to ensure we already added support for it.
+[features documentation](index#general-features) to ensure we already added support for it.
 
 If the feature is listed as fully supported, but not working for you, report [an
 issue](https://github.com/Shopify/ruby-lsp/issues/new/choose) so that we can
@@ -201,7 +201,7 @@ Did it select your preferred version manager? You can define which version manag
 ### Enable logging
 
 You can enable logging to the VS Code output tab,
-[as described in the CONTRIBUTING](https://github.com/Shopify/ruby-lsp/blob/main/CONTRIBUTING.md#tracing-lsp-requests-and-responses) docs.
+[as described in the Contributing](contributing#tracing-lsp-requests-and-responses) docs.
 
 ### Environment activation failed
 

jekyll/vscode-extension.markdown

@@ -32,7 +32,7 @@ The Ruby LSP features include
 See complete information about features [here](https://shopify.github.io/ruby-lsp).
 
 If you experience issues, please see the [troubleshooting
-guide](https://shopify.github.io/ruby-lsp/troubleshooting.html).
+guide](troubleshooting).
 
 ### [Experimental] GitHub Copilot chat agent
 
@@ -58,7 +58,7 @@ As with most LLM chat functionality, suggestions may not be fully accurate, espe
 continue chatting with the `@ruby` agent to fine tune the suggestions given, before deciding to move forward with
 generation.
 
-If you have feedback about this feature, you can let us know in the [DX Slack](https://shopify.github.io/ruby-lsp/invite) or by [creating an issue](https://github.com/Shopify/ruby-lsp/issues/new).
+If you have feedback about this feature, you can let us know in the [DX Slack](invite) or by [creating an issue](https://github.com/Shopify/ruby-lsp/issues/new).
 
 ## Usage
 
@@ -128,7 +128,7 @@ default shell.
 
 {: .note }
 > For manager-specific notes, setting up custom activation for managers not listed above and community-contributed
-> examples, please see [version managers](https://shopify.github.io/ruby-lsp/version-managers.html).
+> examples, please see [version managers](version-managers).
 
 #### Configuring a formatter