Merge branch 'fix_document_for_install_from_source-docs' into 'master'

Documentation: Update installation from source document

See merge request gitlab-org/gitlab-ce!30380

doc/install/installation.md

@@ -167,7 +167,7 @@ cd pcre2-10.33
 chmod +x configure
 ./configure --prefix=/usr --enable-jit
 make
-make install
+sudo make install
 
 # Download and compile from source
 cd /tmp
@@ -634,8 +634,8 @@ Gitaly must be running for the next section.
 gitlab_path=/home/git/gitlab
 gitaly_path=/home/git/gitaly
 
-sudo -u git -H $gitlab_path/bin/daemon_with_pidfile $gitlab_path/tmp/pids/gitaly.pid \
-  $gitaly_path/gitaly $gitaly_path/config.toml >> $gitlab_path/log/gitaly.log 2>&1 &
+sudo -u git -H sh -c "$gitlab_path/bin/daemon_with_pidfile $gitlab_path/tmp/pids/gitaly.pid \
+  $gitaly_path/gitaly $gitaly_path/config.toml >> $gitlab_path/log/gitaly.log 2>&1 &"
 ```
 
 ### Initialize Database and Activate Advanced Features