Update checkstyle.xml

Author: harshsennnn

checkstyle.xml

@@ -2,7 +2,7 @@
 <!DOCTYPE module PUBLIC "-//Checkstyle//DTD Checkstyle Configuration 1.3//EN" "https://checkstyle.org/dtds/configuration_1_3.dtd">
 
 <module name="Checker">
-    <property name="severity" value="error" />
+    <property name="severity" value="warning" />
     <property name="fileExtensions" value="java" />
 
     <!-- Checks for Size Violations -->
@@ -62,4 +62,4 @@
         <module name="SimplifyBooleanExpression" />
         <module name="SimplifyBooleanReturn" />
     </module>
-</module>
+</module>