Merge branch 'patch-1' into 'master'

Removed unneeded word

Pretty simple, improved the wording a bit.

See merge request !4920

doc/install/requirements.md

@@ -52,7 +52,7 @@ If you have enough RAM memory and a recent CPU the speed of GitLab is mainly lim
 ### CPU
-- 1 core works supports up to 100 users but the application can be a bit slower due to having all workers and background jobs running on the same core
+- 1 core supports up to 100 users but the application can be a bit slower due to having all workers and background jobs running on the same core
 - **2 cores** is the **recommended** number of cores and supports up to 500 users
 - 4 cores supports up to 2,000 users
 - 8 cores supports up to 5,000 users