Update extension references and remove old guide (#902)

Author: 0xTim

_posts/2022-07-14-vscode-extension.md

@@ -6,7 +6,7 @@ title: Swift Extension for Visual Studio Code
 author: adam-fowler
 ---
 
-As Swift is deployed across more platforms, it is important that Swift can be developed on more platforms as well. The [Swift Extension for Visual Studio Code](https://marketplace.visualstudio.com/items?itemName=sswg.swift-lang) provides a cross-platform solution for Swift development supporting macOS, Linux, and Windows.
+As Swift is deployed across more platforms, it is important that Swift can be developed on more platforms as well. The [Swift Extension for Visual Studio Code](https://marketplace.visualstudio.com/items?itemName=swiftlang.swift-vscode) provides a cross-platform solution for Swift development supporting macOS, Linux, and Windows.
 
 ##  Motivation
 

_posts/2022-08-18-sswg-server-guides.md

@@ -10,7 +10,7 @@ The [Swift Server Workgroup](/sswg/) has maintained a set of open source guides
 
 The guides cover a number of useful topics:
 
- * [Setting up your environment](/documentation/server/guides/setup-and-ide-alternatives.html)
+ * [Setting up your environment](/tools)
  * [Building]({{site.url}}/documentation/server/guides/building.html) and [testing]({{site.url}}/documentation/server/guides/testing.html)
  * [Profiling]({{site.url}}/documentation/server/guides/performance.html) and [deploying]({{site.url}}/documentation/server/guides/deployment.html) (including AWS, Digital Ocean, Heroku, and GCP)
  * [Docker best practices]({{site.url}}/documentation/server/guides/packaging.html)

_posts/2023-08-17-sswg-update-2023.md

@@ -42,7 +42,7 @@ We're also excited to see the introduction of [Custom Actor Executors](https://g
 
 Notable highlights in tooling include:
 
-* The [Swift Extension for Visual Studio Code](https://marketplace.visualstudio.com/items?itemName=sswg.swift-lang) reached version 1.0.0 and added new features like Swift Package plugin integration, Test Coverage and Test Explorer support, and more.
+* The [Swift Extension for Visual Studio Code](https://marketplace.visualstudio.com/items?itemName=swiftlang.swift-vscode) reached version 1.0.0 and added new features like Swift Package plugin integration, Test Coverage and Test Explorer support, and more.
 * Swift Package plugins have seen adoption in many libraries, from formatters and linters, to code generators such as [SwiftProtobuf](https://github.com/apple/swift-protobuf/tree/main/Plugins/SwiftProtobufPlugin), [gRPC swift](https://github.com/grpc/grpc-swift/tree/main/Plugins/GRPCSwiftPlugin), [Smoke](https://github.com/amzn/smoke-framework-application-generate/tree/main/Plugins), and [Soto](https://soto.codes/2022/12/build-plugin-experiments.html).
 * [Swiftly](https://github.com/swift-server/swiftly) is now available to try out and provides a simple way to install Swift on Linux and switch between versions.
 

assets/images/getting-started-with-vscode-swift/installation.png

@@ -30,7 +30,7 @@ The Swift extension is designed to support the following projects:
    [Getting Started Guide on Swift.org](/getting-started/).
 2. Download and install [Visual Studio Code](https://code.visualstudio.com/Download).
 3. Install the Swift extension from the
-   [VS Code Marketplace](https://marketplace.visualstudio.com/items?itemName=sswg.swift-lang)
+   [VS Code Marketplace](https://marketplace.visualstudio.com/items?itemName=swiftlang.swift-vscode)
    or directly from within the VS Code extensions pane.
 
 ![Installing the vscode-swift extension from the extensions pane](/assets/images/getting-started-with-vscode-swift/installation.png)

documentation/articles/getting-started-with-vscode-swift.md

@@ -7,7 +7,6 @@ The Swift Server Workgroup and Swift on Server community have developed a number
 
 They focus on how to compile, test, deploy and debug such application and provides tips in those areas.
 
-- [Setup and code editing](/documentation/server/guides/setup-and-ide-alternatives.html)
 - [Building](/documentation/server/guides/building.html)
 - [Testing](/documentation/server/guides/testing.html)
 - [Debugging Memory leaks](/documentation/server/guides/memory-leaks-and-usage.html)

documentation/server/guides/index.md

@@ -147,7 +147,7 @@ Provide all keyword or punctuator completions that are valid at a certain positi
 
 Swift Macros allow the generation of source code at compile time. While this provides concise code and avoids repetition of common paradigms, understanding the source code can become harder if it is unknown what the macro expands to. 
 
-Visual Studio Code using the [Swift Extension](https://marketplace.visualstudio.com/items?itemName=sswg.swift-lang) currently has limited ability to show the code generated by a macro by invoking a code action that replaces the macro by its generated code inside the current source file. 
+Visual Studio Code using the [Swift Extension](https://marketplace.visualstudio.com/items?itemName=swiftlang.swift-vscode) currently has limited ability to show the code generated by a macro by invoking a code action that replaces the macro by its generated code inside the current source file. 
 
 The project's goal is to implement a code action to show the macro-generated code without modifying the current source file. This includes the implementation of a request in [sourcekit-lsp](https://github.com/swiftlang/sourcekit-lsp) to compute the contents of the macro expansion and support in the Visual Studio Swift Extension to display that content. Some initial discussion of how the design could look like can be found in [this thread](https://github.com/swiftlang/sourcekit-lsp/pull/892#discussion_r1358428808).