docs: format `CONTRIBUTING.md` (#14302)

* fix: correct typos

* chore: convert indentation to tabs

* fix: missing lang

* chore: trim unnecessary whitespaces and newlines

* chore: use local path

* chore: use GFM alerts

* fix: missing use GFM alerts

CONTRIBUTING.md

@@ -1,7 +1,7 @@
 # Contribution guide
 We're glad you're interested in contributing Misskey! In this document you will find the information you need to contribute to the project.
 
-> **Note**
+> [!NOTE]
 > This project uses Japanese as its major language, **but you do not need to translate and write the Issues/PRs in Japanese.**
 > Also, you might receive comments on your Issue/PR in Japanese, but you do not need to reply to them in Japanese as well.\
 > The accuracy of machine translation into Japanese is not high, so it will be easier for us to understand if you write it in the original language.
@@ -17,32 +17,31 @@ Before creating an issue, please check the following:
 	- Issues should only be used to feature requests, suggestions, and bug tracking.
 	- Please ask questions or troubleshooting in [GitHub Discussions](https://github.com/misskey-dev/misskey/discussions) or [Discord](https://discord.gg/Wp8gVStHW3).
 
-> **Warning**
+> [!WARNING]
 > Do not close issues that are about to be resolved. It should remain open until a commit that actually resolves it is merged.
 
-
 ### Recommended discussing before implementation
-We welcome your purposal.
+We welcome your proposal.
 
 When you want to add a feature or fix a bug, **first have the design and policy reviewed in an Issue** (if it is not there, please make one). Without this step, there is a high possibility that the PR will not be merged even if it is implemented.
 
 At this point, you also need to clarify the goals of the PR you will create, and make sure that the other members of the team are aware of them.
 PRs that do not have a clear set of do's and don'ts tend to be bloated and difficult to review.
 
-Also, when you start implementation, assign yourself to the Issue (if you cannot do it yourself, ask Commiter to assign you). 
+Also, when you start implementation, assign yourself to the Issue (if you cannot do it yourself, ask Committer to assign you).
 By expressing your intention to work on the Issue, you can prevent conflicts in the work.
 
 To the Committers: you should not assign someone on it before the Final Decision.
 
 ### How issues are triaged
 
-The Commiters may:
+The Committers may:
 * close an issue that is not reproducible on latest stable release,
 * merge an issue into another issue,
 * split an issue into multiple issues,
 * or re-open that has been closed for some reason which is not applicable anymore.
 
-@syuilo reserves the Final Desicion rights including whether the project will implement feature and how to implement, these rights are not always exercised.
+@syuilo reserves the Final Decision rights including whether the project will implement feature and how to implement, these rights are not always exercised.
 
 ## Well-known branches
 - **`master`** branch is tracking the latest release and used for production purposes.
@@ -93,7 +92,7 @@ An actual domain will be assigned so you can test the federation.
 
 ## Release
 ### Release Instructions
-1. Commit version changes in the `develop` branch ([package.json](https://github.com/misskey-dev/misskey/blob/develop/package.json))
+1. Commit version changes in the `develop` branch ([package.json](package.json))
 2. Create a release PR.
 	- Into `master` from `develop` branch.
 	- The title must be in the format `Release: x.y.z`.
@@ -104,7 +103,7 @@ An actual domain will be assigned so you can test the federation.
 	- The target branch must be `master`
 	- The tag name must be the version
 
-> **Note**
+> [!NOTE]
 > Why this instruction is necessary:
 > - To perform final QA checks
 > - To distribute responsibility
@@ -155,11 +154,9 @@ After finishing the migration, you can proceed.
 
 ### Start developing
 During development, it is useful to use the
-
 ```
 pnpm dev
 ```
-
 command.
 
 - Server-side source files and automatically builds them if they are modified. Automatically start the server process(es).
@@ -232,7 +229,7 @@ niraxは、Misskeyで使用しているオリジナルのフロントエンド
 ### ルート定義
 ルート定義は、以下の形式のオブジェクトの配列です。
 
-``` ts
+```ts
 {
 	name?: string;
 	path: string;
@@ -245,7 +242,7 @@ niraxは、Misskeyで使用しているオリジナルのフロントエンド
 }
 ```
 
-> **Warning**
+> [!WARNING]
 > 現状、ルートは定義された順に評価されます。
 > たとえば、`/foo/:id`ルート定義の次に`/foo/bar`ルート定義がされていた場合、後者がマッチすることはありません。
 
@@ -307,7 +304,7 @@ export const Default = {
 	parameters: {
 		layout: 'centered',
 	},
-} satisfies StoryObj<typeof MkAvatar>;
+} satisfies StoryObj<typeof MyComponent>;
 ```
 
 If you want to opt-out from the automatic generation, create a `MyComponent.stories.impl.ts` file and add the following line to the file.
@@ -545,7 +542,7 @@ https://github.com/misskey-dev/misskey/pull/10082
 
 テキストhogeおよびfugaについて、片方を必須としつつ両方の指定もありうる場合:
 
-```
+```ts
 export const paramDef = {
 	type: 'object',
 	properties: {