Fix for broken links on bazel.build - updated the .md headers for the…

…se three files

--
PiperOrigin-RevId: 151319959
MOS_MIGRATED_REVID=151319959

site/versions/master/docs/install-os-x.md

@@ -1,8 +1,7 @@
---------------------------------------------------------------------------------
-
+---
 layout: documentation
-
-## title: Installing Bazel on macOS (OS X)
+title: Installing Bazel on macOS
+---
 
 # <a name="mac-os-x"></a>Install Bazel on macOS (OS X)
 

site/versions/master/docs/install-ubuntu.md

@@ -1,8 +1,7 @@
---------------------------------------------------------------------------------
-
+---
 layout: documentation
-
-## title: Installing Bazel on Ubuntu
+title: Installing Bazel on Ubuntu
+---
 
 # <a name="ubuntu"></a>Install Bazel on Ubuntu
 

site/versions/master/docs/windows-chocolatey-maintenance.md

@@ -3,13 +3,12 @@ layout: documentation
 title: Windows Chocolatey maintenance
 ---
 
-Maintaining Bazel Chocolatey package on Windows
-===============================================
+# Maintaining Bazel Chocolatey package on Windows
 
 **NOTE:** The Chocolatey package is experimental; please provide feedback
 (`@petemounce` in issue tracker).
 
-### Prerequisites
+## Prerequisites
 
 You need:
 
@@ -21,7 +20,7 @@ You need:
 *    (to publish) to have set up that API key for the chocolatey source locally
      via `choco apikey -k <your key here> -s https://chocolatey.org/`
 
-### Build
+## Build
 
 Compile bazel with msys2 shell and `compile.sh`.
 
@@ -36,7 +35,7 @@ created.
 
 The `build.ps1` script supports `mode` values `local`, `rc` and `release`.
 
-#### Test
+## Test
 
 0. Build the package (with `-mode local`)
 
@@ -58,7 +57,7 @@ The `build.ps1` script supports `mode` values `local`, `rc` and `release`.
 
 Chocolatey's moderation process automates checks here as well.
 
-### Release
+## Release
 
 Modify `tools/parameters.json` for the new release's URI and checksum once the
 release has been published to github releases.