fix workflow

Author: yosupo06

.github/workflows/artifact.yml

@@ -3,7 +3,7 @@ name: Upload artifact
 on: [push, pull_request]
 
 jobs:
-  doc:
+  upload-zip:
     runs-on: ubuntu-latest
     steps:
       - uses: actions/checkout@v2

.github/workflows/document.yml

@@ -2,6 +2,11 @@ name: Document
 
 on:
   push:
+    branches:
+      - master
+      - production
+    tags:
+      - 'v*'
 
 jobs:
   doc:

.github/workflows/expander.yml

@@ -1,6 +1,10 @@
 name: Expander test
 
-on: [push, pull_request]
+on:
+  push:
+    branches:
+      - '*'
+  pull_request:
 
 jobs:
   expander:

.github/workflows/unittest.yml

@@ -1,6 +1,10 @@
 name: Unittest
 
-on: [push, pull_request]
+on:
+  push:
+    branches:
+      - '*'
+  pull_request:
 
 jobs:
   gtest:    

.github/workflows/unittest_msvc.yml

@@ -1,6 +1,10 @@
 name: Unittest(MSVC)
 
-on: [push, pull_request]
+on:
+  push:
+    branches:
+      - '*'
+  pull_request:
 
 jobs:
   gtest-msvc: