docs: Update url in "DYNAMIC_TEMPLATE_CHAR_WARNING" to point to a working current link

[NickFoden]

Fixes

Checklist

• [ X] I acknowledge that all my contributions will be made under the project's license
• [ X] I have made a material change to the repo (functionality, testing, spelling, grammar)
• [X ] I have read the [Contribution Guide] and my PR follows them.
• [N/A] I updated my branch with the development branch.
• [ N/A ] I have added tests that prove my fix is effective or that my feature works
• [ N/A] I have added necessary documentation about the functionality in the appropriate .md file
• [ N/A ] I have added in line documentation to the code I modified

Short description of what this PR does:

• The link in warning for DYNAMIC_TEMPLATE_CHAR_WARNING was to old url

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[NickFoden]

HI @thinkingserious i just wanted to update a warning to go to a working url. Let me know if i should make a proper issue as well. Happy to do it !

[thinkingserious]

Hello @NickFoden,

Thanks again for the PR!

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[NickFoden]

Awesome thank you !