[skip ci] fix github actions (#167)

.github/workflows/android-build-pr.yml

@@ -6,7 +6,7 @@ on:
 jobs:
   run-build:
     runs-on: ubuntu-latest
-    if: "! contains(toJSON(github.event.title), '[skip ci]')"
+    if: "! contains(toJSON(github.event.pull_request.title), '[skip ci]')"
     steps:
       - name: Checkout repository
         uses: actions/checkout@v2
@@ -49,7 +49,7 @@ jobs:
           message: |
             ### Download the built apks
             You can download the apks built by Github actions after the CI checks pass.
-            Please go to the <a href="${{ github.event.html_url }}/checks">checks page for this PR</a> to find the zipped apk files under the artifacts drop-down, as seen in the example screenshot below.
+            Please go to the <a href="${{ github.event.pull_request.html_url }}/checks">checks page for this PR</a> to find the zipped apk files under the artifacts drop-down, as seen in the example screenshot below.
 
             <img src="https://raw.githubusercontent.com/fork-maintainers/iceraven-browser/fork/.github/imgs/download-artifacts-screenshot.png" />
           repo-token: ${{ secrets.GITHUB_TOKEN }}
@@ -57,7 +57,7 @@ jobs:
 
   run-testDebug:
     runs-on: ubuntu-latest
-    if: "! contains(toJSON(github.event.title), '[skip ci]')"
+    if: "! contains(toJSON(github.event.pull_request.title), '[skip ci]')"
     steps:
       - name: Checkout repository
         uses: actions/checkout@v2
@@ -76,7 +76,7 @@ jobs:
 
   run-detekt:
     runs-on: ubuntu-latest
-    if: "! contains(toJSON(github.event.title), '[skip ci]')"
+    if: "! contains(toJSON(github.event.pull_request.title), '[skip ci]')"
     steps:
       - name: Checkout repository
         uses: actions/checkout@v2
@@ -100,7 +100,7 @@ jobs:
 
   run-ktlint:
     runs-on: ubuntu-latest
-    if: "! contains(toJSON(github.event.title), '[skip ci]')"
+    if: "! contains(toJSON(github.event.pull_request.title), '[skip ci]')"
     steps:
       - name: Checkout repository
         uses: actions/checkout@v2
@@ -119,7 +119,7 @@ jobs:
 
   run-lintDebug:
     runs-on: ubuntu-latest
-    if: "! contains(toJSON(github.event.title), '[skip ci]')"
+    if: "! contains(toJSON(github.event.pull_request.title), '[skip ci]')"
     steps:
       - name: Checkout repository
         uses: actions/checkout@v2