Rename file for correct spelling

If I don't change the name of this file now, I have to live with
it forever...

data/deprecations/14-8-remove_ff_push_rules_supersede_code_owners.yml

+- name: "Deprecate feature flag PUSH_RULES_SUPERSEDE_CODE_OWNERS"  # The name of the feature to be deprecated
+  announcement_milestone: "14.8"  # The milestone when this feature was first announced as deprecated.
+  announcement_date: "2022-02-22"  # The date of the milestone release when this feature was first announced as deprecated. This should almost always be the 22nd of a month (YYYY-MM-22), unless you did an out of band blog post.
+  removal_milestone: "15.0"  # The milestone when this feature is planned to be removed
+  removal_date: "2022-05-22" # The date of the milestone release when this feature is planned to be removed. This should almost always be the 22nd of a month (YYYY-MM-22), unless you did an out of band blog post.
+  breaking_change: true # If this deprecation is a breaking change, set this value to true
+  reporter: sarahwaldner  # GitLab username of the person reporting the deprecation
+  body: |  # Do not modify this line, instead modify the lines below.
+    The feature flag `PUSH_RULES_SUPERSEDE_CODE_OWNERS` is being removed in GitLab 15.0. Upon its removal, push rules will supersede CODEOWNERS. The CODEOWNERS feature will no longer be available for access control.
+# The following items are not published on the docs page, but may be used in the future.
+  stage:  create # (optional - may be required in the future) String value of the stage that the feature was created in. e.g., Growth
+  tiers:  # (optional - may be required in the future) An array of tiers that the feature is available in currently.  e.g., [Free, Silver, Gold, Core, Premium, Ultimate]
+  issue_url:  https://gitlab.com/gitlab-org/gitlab/-/issues/262019 # (optional) This is a link to the deprecation issue in GitLab
+  documentation_url:  # (optional) This is a link to the current documentation page
+  image_url:  # (optional) This is a link to a thumbnail image depicting the feature
+  video_url:  # (optional) Use the youtube thumbnail URL with the structure of https://img.youtube.com/vi/UNIQUEID/hqdefault.jpg

doc/update/deprecations.md

@@ -818,6 +818,18 @@ The following `geo:db:*` tasks will be replaced with their corresponding `db:*:g
 
 **Planned removal milestone: 15.0 (2022-05-22)**
 
+### Deprecate feature flag PUSH_RULES_SUPERSEDE_CODE_OWNERS
+
+WARNING:
+This feature will be changed or removed in 15.0
+as a [breaking change](https://docs.gitlab.com/ee/development/contributing/#breaking-changes).
+Before updating GitLab, review the details carefully to determine if you need to make any
+changes to your code, settings, or workflow.
+
+The feature flag `PUSH_RULES_SUPERSEDE_CODE_OWNERS` is being removed in GitLab 15.0. Upon its removal, push rules will supersede CODEOWNERS. The CODEOWNERS feature will no longer be available for access control.
+
+**Planned removal milestone: 15.0 (2022-05-22)**
+
 ### Deprecate legacy Gitaly configuration methods
 
 WARNING: