fix rtd

Author: jakkdl

docs/rules.rst

@@ -103,7 +103,7 @@ _`ASYNC124`: async-function-could-be-sync
     This excludes class methods as they often have to be async for other reasons, if you really do want to check those you could manually run :ref:`ASYNC910 <ASYNC910>` and/or :ref:`ASYNC911 <ASYNC911>` and check the methods they trigger on.
 
 _`ASYNC125`: constant-absolute-deadline
-    Passing constant values (other than :const:`math.inf`) to timeouts expecting absolute
+    Passing constant values (other than :data:`math.inf`) to timeouts expecting absolute
     deadlines is nonsensical. These should always be defined relative to
     :func:`trio.current_time`/:func:`anyio.current_time`, or you might want to use
     :func:`trio.fail_after`/`:func:`trio.move_on_after`/:func:`anyio.fail_after`/