docs: Add developer peer dependency documentation for plugins (#2850)
docs: Add developer peer dependency documentation for plugins (#2850)

* docs: Add description about peer dependency for writing plugin

* Apply review: more clear expression and example

stylelint/stylelint,gucong3000/stylelint,stylelint/stylelint,gucong3000/stylelint,gucong3000/stylelint,stylelint/stylelint,stylelint/stylelint