fix: mistake-pr workflow on every fork (#61)

Author: DDbrother9999

.github/workflows/disable-auto-reopen-after-second-close.yml

@@ -10,6 +10,7 @@ permissions:
 
 jobs:
   disable:
+    if: github.repository == 'Pedro-Pathing/Quickstart'
     runs-on: ubuntu-latest
     steps:
       - name: Disable automatic reopen

.github/workflows/mistake-pr.yml

@@ -10,6 +10,7 @@ permissions:
 
 jobs:
   detect:
+    if: github.repository == 'Pedro-Pathing/Quickstart'
     runs-on: ubuntu-latest
     steps:
       - name: Detect mistake PR

.github/workflows/reopen-once.yml

@@ -10,6 +10,7 @@ permissions:
 
 jobs:
   reopen:
+    if: github.repository == 'Pedro-Pathing/Quickstart'
     runs-on: ubuntu-latest
     steps:
       - name: Handle /not-a-mistake