Fix permissive regex

The `\.?` is too permissive, letting in anything that ends in the domain

Signed-off-by: Mcat12 <newtoncat12@yahoo.com>

advanced/Scripts/wildcard_regex_converter.sh

@@ -24,5 +24,5 @@ convert_wildcard_to_regex() {
     # Remove repeated domains (may have been inserted two times due to A and AAAA blocking)
     uniquedomains="$(uniq <<< "${domains}")"
     # Automatically generate regex filters and remove old wildcards file
-    awk '{print "\\.?"$0"$"}' <<< "${uniquedomains}" >> "${regexFile:?}" && rm "${wildcardFile}"
+    awk '{print "(^|\\.)"$0"$"}' <<< "${uniquedomains}" >> "${regexFile:?}" && rm "${wildcardFile}"
 }