Add links to https://docs.ultralytics.com/help/ (#2051)

Contribute link https://docs.ultralytics.com/help/

.github/ISSUE_TEMPLATE/bug-report.yml

@@ -62,7 +62,7 @@ body:
       label: Minimal Reproducible Example
       description: >
         When asking a question, people will be better able to provide help if you provide code that they can easily understand and use to **reproduce** the problem.
-        This is referred to by community members as creating a [minimal reproducible example](https://stackoverflow.com/help/minimal-reproducible-example).
+        This is referred to by community members as creating a [minimal reproducible example](https://docs.ultralytics.com/help/minimum_reproducible_example/).
       placeholder: |
         ```
         # Code to reproduce your issue here

CONTRIBUTING.md

@@ -66,7 +66,7 @@ short guidelines below to help users provide what we need to get started.
 
 When asking a question, people will be better able to provide help if you provide **code** that they can easily
 understand and use to **reproduce** the problem. This is referred to by community members as creating
-a [minimum reproducible example](https://stackoverflow.com/help/minimal-reproducible-example). Your code that reproduces
+a [minimum reproducible example](https://docs.ultralytics.com/help/minimum_reproducible_example/). Your code that reproduces
 the problem should be:
 
 - ✅ **Minimal** – Use as little code as possible that still produces the same problem
@@ -84,7 +84,7 @@ should be:
 
 If you believe your problem meets all of the above criteria, please close this issue and raise a new one using the 🐛
 **Bug Report** [template](https://github.com/ultralytics/yolov5/issues/new/choose) and provide
-a [minimum reproducible example](https://stackoverflow.com/help/minimal-reproducible-example) to help us better
+a [minimum reproducible example](https://docs.ultralytics.com/help/minimum_reproducible_example/) to help us better
 understand and diagnose your problem.
 
 ## License