docs: Improve issue templates

Author: oSumAtrIX

.github/ISSUE_TEMPLATE/bug_report.yml

@@ -70,7 +70,8 @@ body:
 
         Before creating a new bug report, please keep the following in mind:
 
-        - **Do not submit a duplicate bug report**: You can review existing bug reports [here](https://github.com/ReVanced/revanced-library/labels/Bug%20report).
+        - **Do not submit a duplicate bug report**: Search for existing bug reports [here](https://github.com/ReVanced/revanced-library/issues?q=label%3A%22Bug+report%22).
+        - **Review the contribution guidelines**: Make sure your bug request adheres to it. You can find the guidelines [here](https://github.com/ReVanced/revanced-library/blob/main/CONTRIBUTING.md).
         - **Do not use the issue page for support**: If you need help or have questions, check out other platforms on [revanced.app](https://revanced.app).
   - type: textarea
     attributes:
@@ -100,7 +101,7 @@ body:
       label: Acknowledgements
       description: Your bug report will be closed if you don't follow the checklist below.
       options:
-        - label: This issue is not a duplicate of an existing bug report.
+        - label: I have checked all open and closed bug reports and this is not a duplicate.
           required: true
         - label: I have chosen an appropriate title.
           required: true

.github/ISSUE_TEMPLATE/feature_request.yml

@@ -70,8 +70,8 @@ body:
 
         Before creating a new feature request, please keep the following in mind:
 
-        - **Do not submit a duplicate feature request**: You can review existing feature requests [here](https://github.com/ReVanced/revanced-library/labels/Feature%20request).
-        - **Review the contribution guidelines**: Make sure your bug report adheres to it. You can find the guidelines [here](https://github.com/ReVanced/revanced-library/blob/main/CONTRIBUTING.md).
+        - **Do not submit a duplicate feature request**: Search for existing feature requests [here](https://github.com/ReVanced/revanced-library/issues?q=label%3A%22Feature+request%22).
+        - **Review the contribution guidelines**: Make sure your feature request adheres to it. You can find the guidelines [here](https://github.com/ReVanced/revanced-library/blob/main/CONTRIBUTING.md).
         - **Do not use the issue page for support**: If you need help or have questions, check out other platforms on [revanced.app](https://revanced.app).
   - type: textarea
     attributes:
@@ -98,7 +98,7 @@ body:
       label: Acknowledgements
       description: Your feature request will be closed if you don't follow the checklist below.
       options:
-        - label: This issue is not a duplicate of an existing feature request.
+        - label:  I have checked all open and closed feature requests and this is not a duplicate.
           required: true
         - label: I have chosen an appropriate title.
           required: true