Highlight argument names in docs text

Signed-off-by: Filipe Laíns <lains@riseup.net>

Author: FFY00

Lib/importlib/_bootstrap_external.py

@@ -1082,9 +1082,9 @@ def get_filename(self, fullname):
 class NamespacePath:
     """Represents a namespace package's path.
 
-    It uses the module name to find its parent module, and from there it looks
+    It uses the module *name* to find its parent module, and from there it looks
     up the parent's __path__. When this changes, the module's own path is
-    recomputed, using path_finder. The initial value is set to path.
+    recomputed, using *path_finder*. The initial value is set to *path*.
 
     For top-level modules, the parent module's path is sys.path.
     """