patch 9.0.0880: preprocessor indenting is off

Problem:    Preprocessor indenting is off.
Solution:   Adjust preprocessor indentation. (Ken Takata, closes #11546)
diff --git a/src/if_python3.c b/src/if_python3.c
index d06f662..e0c546a 100644
--- a/src/if_python3.c
+++ b/src/if_python3.c
@@ -83,7 +83,7 @@
 
 // Suppress Python 3.11 depreciations to see useful warnings
 #if defined(__clang__) && defined(__clang_major__) && __clang_major__ > 11
-#pragma clang diagnostic ignored "-Wdeprecated-declarations"
+# pragma clang diagnostic ignored "-Wdeprecated-declarations"
 #endif
 
 // Python 3 does not support CObjects, always use Capsules