Update allowedHttpLinks.txt

Added https://developer.mozilla.org/ to the list of allowed HTTP links

Author: sammygrey

tools/checks/utils/allowedHttpLinks.txt

@@ -592,3 +592,5 @@ https://github.com/evaera/roblox-animation-transfer?tab=readme-ov-file
 https://github.com/evaera/roblox-animation-transfer
 https://support.tipalti.com/Content/Topics/UserGuide/PaymentInformation/PaymentMethodsCoverage/IntroUSD.htm?Highlight=payment%20coverage#USD
 https://github.com/Roblox/creator-docs/tree/main/content/en-us/reference/cloud
+https://developer.mozilla.org/
+