Update CI to correct branch

.github/workflows/clang_format.yml

@@ -3,7 +3,7 @@ name: Clang-Format
 on:
   push:
     branches:
-      - main
+      - master
   pull_request:
     paths:
       - 'tesseract**'

.github/workflows/cmake_format.yml

@@ -3,7 +3,7 @@ name: CMake-Format
 on:
   push:
     branches:
-      - main
+      - master
   pull_request:
 
   # allow manually starting this workflow

.github/workflows/docker.yml

@@ -3,7 +3,7 @@ name: Docker
 on:
   push:
     branches:
-      - main
+      - master
   pull_request:
     paths:
       - 'docker/Dockerfile'

.github/workflows/ubuntu.yml

@@ -3,7 +3,7 @@ name: Ubuntu
 on:
   push:
     branches:
-      - main
+      - master
   pull_request:
   schedule:
     - cron: '0 5 * * *'

.github/workflows/unstable.yml

@@ -3,7 +3,7 @@ name: Unstable
 on:
   push:
     branches:
-      - main
+      - master
   pull_request:
   schedule:
     - cron: '0 5 * * *'