chore: switch master to main (#121)

.github/workflows/conformance.yml

@@ -1,11 +1,9 @@
 name: PHP Conformance CI
 on:
-  pull_request:
-    branches:
-      - master
   push:
     branches:
-      - master
+      - main
+  pull_request:
   workflow_dispatch:
 jobs:
   build:
@@ -81,4 +79,4 @@ jobs:
         functionType: 'cloudevent'
         useBuildpacks: false
         validateMapping: true
-        cmd: "'php -S localhost:8080 router.php'"
+        cmd: "'php -S localhost:8080 router.php'"

.github/workflows/lint.yaml

@@ -2,7 +2,7 @@ name: PHP Lint CI
 on:
   push:
     branches:
-      - master
+      - main
   pull_request:
 jobs:
   php-cs-fixer:

.github/workflows/unit.yaml

@@ -2,7 +2,7 @@ name: PHP Unit CI
 on:
   push:
     branches:
-      - master
+      - main
   pull_request:
 jobs:
   build:

README.md

@@ -196,7 +196,7 @@ gcloud run deploy my-cloud-function \
 After your instance deploys, you can access it at the URL provided, or view it
 in the [Cloud Console][cloud-run-console].
 
-[functions-samples]: https://github.com/GoogleCloudPlatform/php-docs-samples/tree/master/functions
+[functions-samples]: https://github.com/GoogleCloudPlatform/php-docs-samples/tree/main/functions
 [functions-how-to]: https://cloud.google.com/functions/docs/how-to
 [gcloud]: https://cloud.google.com/sdk/gcloud/
 [gcloud-auth]: https://cloud.google.com/sdk/docs/authorizing

src/LegacyEventMapper.php

@@ -23,7 +23,7 @@ class LegacyEventMapper
 {
     // Maps background/legacy event types to their equivalent CloudEvent types.
     // For more info on event mappings see
-    // https://github.com/GoogleCloudPlatform/functions-framework-conformance/blob/master/docs/mapping.md
+    // https://github.com/GoogleCloudPlatform/functions-framework-conformance/blob/main/docs/mapping.md
     private static $ceTypeMap = [
         'google.pubsub.topic.publish' => 'google.cloud.pubsub.topic.v1.messagePublished',
         'providers/cloud.pubsub/eventTypes/topic.publish' => 'google.cloud.pubsub.topic.v1.messagePublished',