Fix warnings occuring with npm run build

Author: Linda Peng

src/components/Nav/index.js

@@ -130,7 +130,7 @@ export default function Nav() {
                         onKeyDown={handleListKeyDown}
                       >
                         <MenuItem onClick={handleMenuClose}>
-                          <a onClick={logout}>Logout</a>
+                          <span onClick={logout}>Logout</span>
                         </MenuItem>
                       </MenuList>
                     </ClickAwayListener>

src/components/Resources/index.js

@@ -20,7 +20,7 @@ function Resources({ getResourcesUrl }) {
         // handle error
         console.log(error);
       });
-  }, []);
+  }, [getResourcesUrl]);
 
   return (
     <>