Issue #28139: Fix messed up indentation

Also update the classmethod and staticmethod doc strings and comments to
match the RST documentation.
diff --git a/Modules/clmodule.c b/Modules/clmodule.c
index e5d568f..2179bcd 100644
--- a/Modules/clmodule.c
+++ b/Modules/clmodule.c
@@ -964,7 +964,7 @@
 
     if (PyErr_WarnPy3k("the cl module has been removed in "
                        "Python 3.0", 2) < 0)
-    return;
+        return;
 
     m = Py_InitModule("cl", cl_methods);
     if (m == NULL)