fix: correct else-if statement

setup

@@ -78,7 +78,7 @@ else
     while read line; do
         if [[ $line == *"GITEA_HOST_IP_ADDRESS="* ]]; then
             GITEA_HOST_IP_ADDRESS=$(echo $line | cut -c 23-)
-        else if [[ $line == *"GITEA_HOST_WEB_PORT="* ]]; then
+        elif [[ $line == *"GITEA_HOST_WEB_PORT="* ]]; then
             GITEA_HOST_WEB_PORT=$(echo $line | cut -c 21-)
         fi
     done < "config"