Thanks is missing, redirect as it's in the source ACKNOWLEDGEMENTS.md

(and other places)
Reviewed-by: Tomas Mraz <[email protected]>
(Merged from #474)

Author: iamamoose

.htaccess

@@ -15,6 +15,7 @@ Redirect permanent /policies/codingstyle.html /policies/technical/coding-style.h
 Redirect permanent /policies/secpolicy.html /policies/general/security-policy.html
 Redirect permanent /policies/travel.html /policies/general/travel-policy.html
 Redirect permanent /policies/platformpolicy.html /policies/general/platform-policy.html
+Redirect permanent /community/thanks.html /support/acks.html
 
 <Files *.md5>
 ForceType application/binary