git-release: add page (#6095)

pages/common/git-release.md

@@ -0,0 +1,17 @@
+# git release
+
+> Create a Git release tag.
+> Part of `git-extras`.
+> More information: <https://github.com/tj/git-extras/blob/master/Commands.md#git-release>.
+
+- Create and push a Git release:
+
+`git release {{tag_name}}`
+
+- Create and push a signed Git release:
+
+`git release {{tag_name}} -s`
+
+- Create and push a Git release with a message:
+
+`git release {{{tag_name}}} -m "{{message}}"`