Correct Gitaly config typo in update guides

The 9.4 to 9.5 and 9.5 to 10.0 guides missed a closing backtick. This
was corrected in the 10.0 to 10.1 guide, from which subsequent guides
were written without the error.

doc/update/9.4-to-9.5.md

@@ -154,7 +154,7 @@ sudo -u git -H make
 
 #### New Gitaly configuration options required
 
-In order to function Gitaly needs some additional configuration information. Below we assume you installed Gitaly in `/home/git/gitaly` and GitLab Shell in `/home/git/gitlab-shell'.
+In order to function Gitaly needs some additional configuration information. Below we assume you installed Gitaly in `/home/git/gitaly` and GitLab Shell in `/home/git/gitlab-shell`.
 
 ```shell
 echo '

doc/update/9.5-to-10.0.md

@@ -154,7 +154,7 @@ sudo -u git -H make
 
 #### New Gitaly configuration options required
 
-In order to function Gitaly needs some additional configuration information. Below we assume you installed Gitaly in `/home/git/gitaly` and GitLab Shell in `/home/git/gitlab-shell'.
+In order to function Gitaly needs some additional configuration information. Below we assume you installed Gitaly in `/home/git/gitaly` and GitLab Shell in `/home/git/gitlab-shell`.
 
 ```shell
 echo '