update docs for building-hacks

docs/Lua API.rst

@@ -4287,10 +4287,10 @@ blueprint files:
 The names of the functions are also available as the keys of the
 ``valid_phases`` table.
 
-.. _building-hacks:
+.. _building-hacks-api:
 
-building-hacks
-==============
+building-hacks API
+==================
 
 This plugin overwrites some methods in workshop df class so that mechanical workshops are possible. Although
 plugin export a function it's recommended to use lua decorated function.

docs/plugins/building-hacks.rst

@@ -0,0 +1,11 @@
+building-hacks
+==============
+
+Allows mods to create and manage powered workshops.
+
+Usage::
+
+    enable building-hacks
+
+Please see the `building-hacks-api` for information on accessing this plugin
+from Lua scripts.