style(Config) : config 경로 수정

src/main/java/org/triumers/newsnippetback/config/WebConfig.java → src/main/java/org/triumers/newsnippetback/common/config/WebConfig.java

@@ -1,4 +1,4 @@
-package org.triumers.newsnippetback.config;
+package org.triumers.newsnippetback.common.config;
 
 import org.springframework.context.annotation.Configuration;
 import org.springframework.web.servlet.config.annotation.CorsRegistry;