fixes #2072 update the rule-loader.yml to fix a typo (#2073)

rule-loader/src/main/resources/config/rule-loader.yml

@@ -10,8 +10,7 @@ portalToken: ${portal.authorization:}
 # a rules.yml must be in the externalized folder to load rules from it. The config-folder option should
 # only be used for local testing or the light-portal is not implemented in the organization and cloud
 # light-portal is not allowed due to security policy or blocked.
-ruleSource: ${rule-Loader.ruleSource:light-portal}
+ruleSource: ${rule-loader.ruleSource:light-portal}
 # When ruleSource is config-folder, then we can load the endpoint to rules mapping here instead of portal
 # service details. Each endpoint will have a list of rules and the type of the rules.
 endpointRules: ${rule-loader.endpointRules:}
-