docs: update github syntax of note & warning

README.md

@@ -36,7 +36,7 @@ or
 pnpm add -D eslint-webpack-plugin
 ```
 
-> [!NOTE]:
+> [!NOTE]
 >
 > You also need to install `eslint >= 8` from npm, if you haven't already:
 
@@ -78,7 +78,7 @@ You can pass [eslint options](https://eslint.org/docs/developer-guide/nodejs-api
 > This is a different set of options than what you'd specify in `package.json` or `.eslintrc`.
 > See the [eslint docs](https://eslint.org/docs/developer-guide/nodejs-api#-new-eslintoptions) for more details.
 
-> [!WARNING]:
+> [!WARNING]
 >
 > In eslint-webpack-plugin version 1 the options were passed to the now deprecated [CLIEngine](https://eslint.org/docs/developer-guide/nodejs-api#cliengine).