[Doc] Rephrase precheck-pr wording in docs and PR template

Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>
Signed-off-by: hsliu <liuhongsheng4@huawei.com>

.github/PULL_REQUEST_TEMPLATE.md

@@ -1,5 +1,5 @@
 <!-- markdownlint-disable -->
-**Before submitting:** run `/precheck-pr` in Claude Code for a self-check against project conventions — catches dead code, missing benchmarks, and title format issues.
+**Before submitting:** run the precheck-pr skill with code agent for a self-check against project conventions — catches dead code, missing benchmarks, and title format issues.
 
 PLEASE FILL IN THE PR DESCRIPTION HERE ENSURING ALL CHECKLIST ITEMS (AT THE BOTTOM) HAVE BEEN CONSIDERED.
 

docs/contributing/README.md

@@ -116,9 +116,9 @@ Only specific types of PRs will be reviewed. The PR title is prefixed appropriat
 !!! note
     If the PR spans more than one category, please include all relevant prefixes.
 
-### Pre-Check with Claude Code
+### Pre-Check Before Submitting
 
-Before submitting a PR, run the `precheck-pr` Claude Code skill for a self-review against project conventions:
+Before submitting a PR, run the precheck-pr skill with code agent for a self-review against project conventions:
 
 ```
 /precheck-pr