Fix Lock.locked() to remove extra bold highlighting (#18042)

grantjenks · warsaw · commit ef8844f1bcbe · 2020-01-17T14:54:44.000-08:00
diff --git a/Doc/library/threading.rst b/Doc/library/threading.rst
@@ -497,6 +497,7 @@ All methods are executed atomically.
       There is no return value.
 
    .. method:: locked()
+
       Return true if the lock is acquired.
 
 
