Apply suggestions from code review

Co-authored-by: Copilot <175728472+Copilot@users.noreply.github.com>

Author: zeevmoney

src/main/java/io/permit/sdk/api/GroupsApi.java

@@ -273,7 +273,7 @@ public GroupRead assignUserToGroup(String userId, String groupInstanceKey, Strin
     /**
      * Remove a role from the group, all users in this group will lose this role.
      *
-     * @param groupInstanceKey The key of the group to assign the user.
+     * @param groupInstanceKey The key of the group to remove the role from.
      * @param groupAddRole The {@link GroupAddRole} object containing the assignment data.
      * @throws IOException          If an I/O error occurs during the HTTP request.
      * @throws PermitApiError       If the Permit API returns a response with an error status code.

src/main/java/io/permit/sdk/openapi/models/GroupAddRole.java

@@ -47,7 +47,7 @@ public class GroupAddRole {
     @Expose
     public String resource;
     /**
-     * ResoruceInstance
+     * ResourceInstance
      * <p>
      * The resource instance key or id that the role belongs to.
      * (Required)

src/main/java/io/permit/sdk/openapi/models/GroupAssignUser.java

@@ -36,7 +36,7 @@ public class GroupAssignUser {
 
     /**
      *
-     * @param groupInstanceKey
+
      * @param tenant
      */
     public GroupAssignUser(java.lang.String tenant) {

src/test/java/io/permit/sdk/endpoints/GroupsApiE2ETest.java

@@ -216,7 +216,7 @@ void testGroupsApi() {
             assertFalse(foundRole);
             assertFalse(foundResource);
             assertFalse(foundResourceInstance);
-            assertEquals(1, marketingGroup.assignedRoles.size());
+            assertEquals(1, afterRemovingRole.assignedRoles.size());
 
             // delete group
             logger.info("Delete group...");