Revert back to default Swift version for doc building (#308)

finestructure · web-flow · commit 312e129d4380 · 2023-07-18T18:06:10.000+02:00
diff --git a/.spi.yml b/.spi.yml
@@ -3,4 +3,3 @@ builder:
   configs:
   - platform: ios
     documentation_targets: [Runestone]
-    swift_version: 5.9
