Docs: Cleaning up various links

doc/development/contributing/style_guides.md

@@ -23,8 +23,7 @@
 1. Code should be written in [US English][us-english]
 
 This is also the style used by linting tools such as
-[RuboCop](https://github.com/bbatsov/rubocop),
-[PullReview](https://www.pullreview.com/) and [Hound CI](https://houndci.com).
+[RuboCop](https://github.com/bbatsov/rubocop) and [Hound CI](https://houndci.com).
 
 ---
 

doc/install/database_mysql.md

@@ -97,7 +97,7 @@ Follow the below instructions to ensure you use the most up to date requirements
 
 #### Check for InnoDB File-Per-Table Tablespaces
 
-We need to check, enable and maybe convert your existing GitLab DB tables to the [InnoDB File-Per-Table Tablespaces](http://dev.mysql.com/doc/refman/5.7/en/innodb-multiple-tablespaces.html) as a prerequisite for supporting **utfb8mb4 with long indexes** required by recent GitLab databases.
+We need to check, enable and maybe convert your existing GitLab DB tables to the [InnoDB File-Per-Table Tablespaces](https://dev.mysql.com/doc/refman/5.7/en/innodb-multiple-tablespaces.html) as a prerequisite for supporting **utfb8mb4 with long indexes** required by recent GitLab databases.
 
     # Login to MySQL
     mysql -u root -p
@@ -134,7 +134,7 @@ We need to check, enable and maybe convert your existing GitLab DB tables to the
 
 > You need **MySQL 5.5.3 or later** to perform this update.
 
-Whatever the results of your checks above, we now need to check if your GitLab database has been created using [InnoDB File-Per-Table Tablespaces](http://dev.mysql.com/doc/refman/5.7/en/innodb-multiple-tablespaces.html) (i.e. `innodb_file_per_table` was set to **1** at initial setup time).
+Whatever the results of your checks above, we now need to check if your GitLab database has been created using [InnoDB File-Per-Table Tablespaces](https://dev.mysql.com/doc/refman/5.7/en/innodb-multiple-tablespaces.html) (i.e. `innodb_file_per_table` was set to **1** at initial setup time).
 
 NOTE: **Note:**
 This setting is [enabled by default](http://dev.mysql.com/doc/refman/5.7/en/innodb-parameters.html#sysvar_innodb_file_per_table) since MySQL 5.6.6.
@@ -163,7 +163,7 @@ Now, if you have a **different result** returned by the 2 commands above, it mea
 
 - **Case 2: a result equals to "0" OR not the same result for both commands**
 
-Unfortunately, none or only some of your GitLab database tables use the GitLab requirement of [InnoDB File-Per-Table Tablespaces](http://dev.mysql.com/doc/refman/5.7/en/innodb-multiple-tablespaces.html).
+Unfortunately, none or only some of your GitLab database tables use the GitLab requirement of [InnoDB File-Per-Table Tablespaces](https://dev.mysql.com/doc/refman/5.7/en/innodb-multiple-tablespaces.html).
 
 Let's enable what we need on the running server:
 
@@ -297,8 +297,7 @@ GitLab database to `longtext` columns, which can persist values of up to 4GB
 (sometimes less if the value contains multibyte characters).
 
 Details can be found in the [PostgreSQL][postgres-text-type] and
-[MySQL][mysql-text-types] manuals.
+[MySQL](https://dev.mysql.com/doc/refman/5.7/en/string-type-overview.html) manuals.
 
 [postgres-text-type]: http://www.postgresql.org/docs/9.2/static/datatype-character.html
-[mysql-text-types]: http://dev.mysql.com/doc/refman/5.7/en/string-type-overview.html
 [ce-38152]: https://gitlab.com/gitlab-org/gitlab-ce/issues/38152

doc/ssh/README.md

@@ -30,7 +30,7 @@ clients at your disposal.
 ### Installing the SSH client for Windows 8.1 and Windows 7
 
 The easiest way to install Git and the SSH client on Windows 8.1 and Windows 7
-is [Git for Windows](https://gitforwindows.com). It provides a BASH
+is [Git for Windows](https://gitforwindows.org). It provides a BASH
 emulation (Git Bash) used for running Git from the command line and the
 `ssh-keygen` command that is useful to create SSH keys as you'll learn below.
 

doc/workflow/repository_mirroring.md

@@ -396,4 +396,4 @@ settings are recommended:
 - `unknown_git` user will be used as the commit author if the GitLab user does not exist in
   Perforce Helix.
 
-Read about [Git Fusion settings on Perforce.com](https://www.perforce.com/perforce/doc.current/manuals/git-fusion/Content/Git-Fusion/section_zdp_zz1_3l.html).
+Read about [Git Fusion settings on Perforce.com](https://www.perforce.com/perforce/doc.current/manuals/git-fusion/Content/Git-Fusion/section_vss_bdw_w3.html#section_zdp_zz1_3l).