[Docs] Fix broken link in commit_checklist.md

Change-Id: I953b976c800bf5826a8c4f3702ac1d93210c5c96
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/3393766
Reviewed-by: Andrew Williams <[email protected]>
Commit-Queue: Andrew Williams <[email protected]>
Cr-Commit-Position: refs/heads/main@{#959910}

Author: dsanders11

docs/commit_checklist.md

@@ -209,8 +209,9 @@ You are expected to wait for all actively participating reviewers to CR+1 the
 change before submitting (CQ+2), even if your CL already has all required owners
 reviews. Other than preventing confusion and mistakes, this expectation exists
 because:
-1. Participating reviewers are [helping you write sustainable code](cr_respect),
-   and letting them sign off is respectful of their efforts.
+1. Participating reviewers are
+   [helping you write sustainable code][sustainable-code], and letting them sign
+   off is respectful of their efforts.
 1. The owners system is not perfect, and sometimes you will need an owner who
    *can* approve the whole change, but will delegate approval of pieces to
    other, more knowledgeable owners.
@@ -285,3 +286,4 @@ branches. Please mark the associated crbug as "fixed".
 [simple-chrome]: https://chromium.googlesource.com/chromiumos/docs/+/HEAD/simple_chrome_workflow.md
 [uploading-a-change-for-review]: contributing.md#Uploading-a-change-for-review
 [respectful-changes]: cl_respect.md
+[sustainable-code]: cr_respect.md