colon

Co-authored-by: Mikhail Efimov <efimov.mikhail@gmail.com>

Author: ivanbelenky

Doc/library/sysconfig.rst

@@ -394,7 +394,7 @@ Other functions
    - win-amd64 (64-bit Windows on AMD64, aka x86_64, Intel64, and EM64T)
    - win-arm64 (64-bit Windows on ARM64, aka AArch64)
 
-   macOS
+   macOS:
 
    - macosx-10.13-x86_64
    - macosx-11-universal2