Update .htaccess

Author: LandauRaz

.htaccess

@@ -900,4 +900,4 @@ RewriteRule ^documentation/getting_started/unit_tests/$ /quick-start/environment
 RewriteCond %{QUERY_STRING} ^$
 RewriteRule ^documentation/tools/CLI/starknet\-compiler\-options/$ /cli/starknet-compiler-options/? [R=301,L]
 
-# test
+RewriteRule ^tools/starknet\-book/$ https://docs.starknet.io/? [R=301,L]