docs: update git commit procedure in cursor rules

Author: YusukeHirao

.cursor/rules/git.mdc

@@ -6,7 +6,7 @@ alwaysApply: true
 # Commit creation
 
 - When asked to "commit":
-  1. Check staged files using `git diff --staged` and create a commit message using *only* the staged files.
+  1. Check staged files using `git --no-pager diff --staged` and create a commit message using *only* the staged files.
      - Once the message is ready, directly propose the commit command to the user.
   2. If no files are staged, check the differences using `git status`, then stage files sequentially based on the following commit granularity before committing:
      - Separate commits by package.
@@ -25,10 +25,5 @@ alwaysApply: true
     - `refactor`
     - `test`
     - `chore`
-  - You must use the following scopes:
-    - Each package name (without namespace)
-    - `repo`
-    - `deps`
-    - `github`
 - The message body's lines must not be longer than 100 characters
 - The subject must not be sentence-case, start-case, pascal-case, upper-case