fix pull_request workflow

Signed-off-by: Nathan Rew <nrew225@gmail.com>

.github/workflows/pull_request.yml

@@ -3,41 +3,45 @@ name: Pull Request Checks
 on:
   pull_request:
     branches: [ master ]
+  workflow_dispatch:
 
 jobs:
   check_syntax:
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v2
+      - name: Checkout
+        uses: actions/checkout@v2
+        with:
+          fetch-depth: 0
+      - name: create diff
+        run: git diff origin/master -U0 README.md | grep --perl-regexp --only-matching "(?<=^\+).*" > temp.md
       - name: Use Node.js
         uses: actions/setup-node@v1
         with:
           node-version: '14.x'
-      - name: create diff
-        run: |
-          git fetch
-          git diff origin/master -U0 README.md | grep --perl-regexp --only-matching "(?<=^\+).*" >> temp.md 
-      - name: Checks
+      - name: install chalk
         run: |
           cd tests 
           npm install chalk
           cd ..
-          script -e -c 'node tests/test.js -r README.md -d temp.md'
+      - name: Checks
+        run: script -e -c 'node tests/test.js -r README.md -d temp.md' 
 
   check_links:
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v2
+      - name: Checkout
+        uses: actions/checkout@v2
+        with:
+          fetch-depth: 0
+      - name: create diff
+        run: git diff origin/master -U0 README.md | grep --perl-regexp --only-matching "(?<=^\+).*" > temp.md          
       - name: Set up Ruby 2.6
         uses: actions/setup-ruby@v1
         with:
           ruby-version: 2.6.x
-      - name: create diff
-        run: |
-          git fetch
-          git diff origin/master -U0 README.md | grep --perl-regexp --only-matching "(?<=^\+).*" >> temp.md 
+      - name: install awesome_bot
+        run: gem install awesome_bot
       - name: Checks
-        run: |
-          gem install awesome_bot
-          awesome_bot -f temp.md --allow-redirect --skip-save-results --allow 202 --white-list < tests/awesomebot_whitelist.txt
+        run: awesome_bot -f temp.md --allow-redirect --skip-save-results --allow 202 --white-list < tests/link_whitelist.txt