Spelling fixes (#7142)

Author: scop

google_checkstyle.xml

@@ -133,7 +133,7 @@
             <message key="ws.notPreceded" value="GenericWhitespace ''{0}'' is not preceded with whitespace."/>
         </module>
         <module name="Indentation">
-            <!-- Modified defaults for swagger-codegen (multipled Google by 2)-->
+            <!-- Modified defaults for swagger-codegen (multiplied Google by 2)-->
             <property name="basicOffset" value="4"/>
             <property name="braceAdjustment" value="0"/>
             <property name="caseIndent" value="4"/>

modules/swagger-codegen/src/main/java/io/swagger/codegen/DefaultCodegen.java

@@ -191,7 +191,7 @@ public Map<String, Object> postProcessAllModels(Map<String, Object> objs) {
             for (String name : allModels.keySet()) {
                 CodegenModel cm = allModels.get(name);
                 CodegenModel parent = allModels.get(cm.parent);
-                // if a discriminator exists on the parent, don't add this child to the inheritance heirarchy
+                // if a discriminator exists on the parent, don't add this child to the inheritance hierarchy
                 // TODO Determine what to do if the parent discriminator name == the grandparent discriminator name
                 while (parent != null) {
                     if (parent.children == null) {