Merge branch 'sh-fix-health-docs' into 'master'

Fix typo in health check documentation

[ci skip]

Closes #49733

See merge request gitlab-org/gitlab-ce!20914

doc/user/admin_area/monitoring/health_check.md

@@ -30,7 +30,7 @@ With default whitelist settings, the probes can be accessed from localhost:
 
 
 The first endpoint, `/-/health/`, only checks whether the application server is running. It does
--not verify the database or other services are running. A successful response with return
+-not verify the database or other services are running. A successful response will return
 a 200 status code with the following message:
 
 ```