Build docs for 1.10.0rc3

Author: foosel

.github/workflows/docs.yaml

@@ -16,7 +16,7 @@ jobs:
       matrix:
         # you must not use anything but include here or the version.json generation will fail!
         include:
-          - version: "1.10.0rc2"
+          - version: "1.10.0rc3"
             source: "tags"
             python: "3.7"
             sphinx: "4.5.0"