Update GetStarted.mustache

[micahgodbolt]

Seems the H1 has some specific styles added to it making content above it not look very good.

[opbld33]

Docs Build status updates of commit 6b411e9:

❌ Validation status: errors

Please follow instructions here which may help to resolve issue.

File	Status	Preview URL	Details
	❌Error		Details

• Line 112: [Error] W:\x0dw-s\office-ui-fabric-react\docfx.json for docset office-ui-fabric-react doesn't exist. Please check if build_source_folder is correctly set in publish config file.

For more details, please refer to the build report.

Note: If you changed an existing file name or deleted a file, broken links in other files to the deleted or renamed file are listed only in the full build report.

[opbld32]

Docs Build status updates of commit 34acdfb:

❌ Validation status: errors

Please follow instructions here which may help to resolve issue.

File	Status	Preview URL	Details
	❌Error		Details

• Line 112: [Error] W:\fnjr-s\office-ui-fabric-react\docfx.json for docset office-ui-fabric-react doesn't exist. Please check if build_source_folder is correctly set in publish config file.

For more details, please refer to the build report.

Note: If you changed an existing file name or deleted a file, broken links in other files to the deleted or renamed file are listed only in the full build report.