docsify: add page (#8185)

pages/common/docsify.md

@@ -0,0 +1,24 @@
+# docsify
+
+> Initialize and serve markdown documentation.
+> More information: <https://cli.docsifyjs.org>.
+
+- Initialize a new documentation in the current directory:
+
+`docsify init`
+
+- Initialize a new documentation in the specified directory:
+
+`docsify init {{path/to/directory}}`
+
+- Serve local documentation on `localhost:3000` with live reload:
+
+`docsify serve {{path/to/directory}}`
+
+- Serve local documentation on `localhost` at the specified port:
+
+`docsify serve --port {{80}} {{path/to/directory}}`
+
+- Generate a sidebar markdown file in the specified directory:
+
+`docsify generate {{path/to/directory}}`