build x86 windows wheels

Author: Jeff Whitaker

.github/workflows/build-windows-wheels.yml

@@ -25,7 +25,7 @@ jobs:
       fail-fast: false
       matrix:
         python-version: [ "3.6", "3.7", "3.8", "3.9", "3.10" ]
-        platform: [x64, x32]
+        platform: [x64, x86]
     env:
       REPO_DIR: cftime
       PKG_NAME: cftime