docs(:ui): update READMEs to new format

modules/ui/vc-gutter/README.org

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+← [[doom-module-index:][Back to module index]]               ↙ [[doom-module-issues:::ui vc-gutter][Issues]]  ↖ [[doom-module-source:ui/vc-gutter][Source]]  ± [[doom-suggest-edit:][Suggest edits]]  ? [[doom-help-modules:][Help]]
+--------------------------------------------------------------------------------
+#+TITLE:    :ui vc-gutter
+#+SUBTITLE: Get your diff out of the gutter
+#+CREATED:  June 26, 2018
+#+SINCE:    21.12.0
+
+* Description :unfold:
+This module displays a diff of the current file (against HEAD) in the fringe.
+Supports Git, Svn, Hg, and Bzr.
+
+** Maintainers
+- [[doom-user:][@hlissner]]
+
+[[doom-contrib-maintainer:][Become a maintainer?]]
+
+** Module flags
+/This module has no flags./
+
+** Packages
+- [[doom-package:][git-gutter-fringe]]
+
+** TODO Hacks
+#+begin_quote
+ 🔨 This module's hacks haven't been documented yet. [[doom-contrib-module:][Document them?]]
+#+end_quote
+
+** TODO Changelog
+# This section will be machine generated. Don't edit it by hand.
+/This module does not have a changelog yet./
+
+* Installation
+[[id:01cffea4-3329-45e2-a892-95a384ab2338][Enable this module in your ~doom!~ block.]]
+
+This module requires any of Git, Svn, Hg, and/or Bazaar to get gutter diffs in
+projects version controlled by them.
+
+* TODO Usage
+#+begin_quote
+🔨 This module has no usage documentation yet. [[doom-contrib-module:][Write some?]]
+#+end_quote
+
+* TODO Configuration
+#+begin_quote
+🔨 This module has no configuration documentation yet. [[doom-contrib-module:][Write some?]]
+#+end_quote
+
+* Troubleshooting
+/There are no known problems with this module./ [[doom-report:][Report one?]]
+
+* Frequently asked questions
+/This module has no FAQs yet./ [[doom-suggest-faq:][Ask one?]]
+
+* TODO Appendix
+#+begin_quote
+🔨 This module has no appendix yet. [[doom-contrib-module:][Write one?]]
+#+end_quote