[SPARK-52941] Make GitHub Actions work for spark-connect-rust (#2)

# Description

This PR proposes to let GA work, and includes fix for a typo in `README.md`

## Related Issue(s)
[SPARK-52941](https://issues.apache.org/jira/browse/SPARK-52941)

Author: sarutak

.github/workflows/build.yml

@@ -1,4 +1,5 @@
-ensed to the Apache Software Foundation (ASF) under one
+#
+# Licensed to the Apache Software Foundation (ASF) under one
 # or more contributor license agreements.  See the NOTICE file
 # distributed with this work for additional information
 # regarding copyright ownership.  The ASF licenses this file
@@ -14,14 +15,16 @@ ensed to the Apache Software Foundation (ASF) under one
 # KIND, either express or implied.  See the License for the
 # specific language governing permissions and limitations
 # under the License.
+#
 
-name: build
+name: Build and test
 
 on:
+  workflow_dispatch:
   push:
-    branches: [main, "v*"]
+    branches: [master, "v*"]
   pull_request:
-    branches: [main, "v*"]
+    branches: [master, "v*"]
 
 jobs:
   format:

README.md

@@ -968,4 +968,3 @@ Only a few of the functions are covered by unit tests. Functions involving closu
 [open]: https://cdn.jsdelivr.net/gh/Readme-Workflows/Readme-Icons@main/icons/octicons/IssueNeutral.svg
 [done]: https://cdn.jsdelivr.net/gh/Readme-Workflows/Readme-Icons@main/icons/octicons/ApprovedChanges.svg
 [partial]: https://cdn.jsdelivr.net/gh/Readme-Workflows/Readme-Icons@main/icons/octicons/IssueDrafted.svg
->>>>>>> source/main