Update pod-GitLab.md

pod-GitLab.md

 # NAME
 
-    GitLab - convenience wrapper for GitLab::API that provides useful constants
+GitLab - convenience wrapper for [GitLab::API](pod-GitLab-api.md) that provides useful constants
 
 # SYNOPSIS
 
-    use GitLab qw(:utils);
+```{.pl}
+use GitLab qw(:utils);
 
-    my $gitlab = GitLab::API->new(...);
-    my $users  = $gitlab->users();
+my $gitlab = GitLab::API->new(...);
+my $users  = $gitlab->users();
+```
 
 # DESCRIPTION
 
@@ -20,34 +22,42 @@ for explanation.
 
 Import with `:group_visibility` tag.
 
-    10 GROUP_PRIVATE
-    20 GROUP_INTERNAL
-    30 GROUP_PUBLIC
+| code  | constant               |
+| ----: | ---------------------- |
+| 10    | `GROUP_PRIVATE`        |
+| 20    | `GROUP_INTERNAL`       |
+| 30    | ` GROUP_PUBLIC`        |
 
 ### Member access
 
 Import with `:member_access` tag.
 
-    10 MEMBER_GUEST
-    20 MEMBER_REPORTER
-    30 MEMBER_DEVELOPER
-    40 MEMBER_MASTER
-    50 MEMBER_OWNER
+| code  | constant               |
+| ----: | ---------------------- |
+| 10    | `MEMBER_GUEST`         |
+| 20    | `MEMBER_REPORTER`      |
+| 30    | `MEMBER_DEVELOPER`     |
+| 40    | `MEMBER_MASTER`        |
+| 50    | `MEMBER_OWNER`         |
 
 ## Utilities
 
 Import with `:utils` tag.
 
-- group\_visibility\_name()
+- `group_visibility_name()`
 
-        $name = GitLab::group_visibility_name($code)
+    ```{.pl}
+    $name = GitLab::group_visibility_name($code)
+    ```
 
     Translates a Group Visibility code to its string representation, i.e. _Private_, _Internal_ or _Public_.
     If the parameter does not represent a valid GitLab Group Visibility code, returns _Invalid_.
 
-- member\_access\_name()
+- `member_access_name()`
 
-        $name = GitLab::member_access_name($code);
+    ```{.pl}
+    $name = GitLab::member_access_name($code);
+    ```
 
     Translates a Member Access code to its string representation, i.e. _Guest_, _Reporter_, _Developer_, _Master_ and _Owner_.
     If the parameter does not represent a valid GitLab Member Access code, returns _Invalid_.
@@ -62,18 +72,18 @@ Roman Lacko <[xlacko1@fi.muni.cz](https://metacpan.org/pod/xlacko1@fi.muni.cz)>
 
     Complete GitLab API v3 implementation with CLI support.
 
-- [GitLab::API](https://metacpan.org/pod/GitLab::API)
+- [GitLab::API](pod-GitLab-API.md)
 
     implementation of the [GitLab API](http://docs.gitlab.com/ce/api/) client.
 
-- [GitLab::Groups](https://metacpan.org/pod/GitLab::Groups)
+- [GitLab::Groups](pod-GitLab-Groups.md)
 
     [GitLab Groups](http://docs.gitlab.com/ce/api/groups.html) methods.
 
-- [GitLab::Namespaces](https://metacpan.org/pod/GitLab::Namespaces)
+- [GitLab::Namespaces](pod-GitLab-Namespaces.md)
 
     [GitLab Namespaces](http://docs.gitlab.com/ce/api/namespaces.html) methods.
 
-- [GitLab::Users](https://metacpan.org/pod/GitLab::Users)
+- [GitLab::Users](pod-GitLab-Users.md)
 
     [GitLab Users](http://docs.gitlab.com/ce/api/users.html) methods.