Fix indents in cr_input_style_css.html

Bug: None
Change-Id: Ibe70a59070de6596e10620688c2daa5c35133e4a
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2640402
Commit-Queue: Esmael Elmoslimany <aee@chromium.org>
Reviewed-by: Esmael Elmoslimany <aee@chromium.org>
Cr-Commit-Position: refs/heads/master@{#845819}

ui/webui/resources/cr_elements/cr_input/cr_input_style_css.html

@@ -101,6 +101,6 @@
         transition: opacity 120ms ease-in, width 180ms ease-out;
         width: 100%;
       }
-   </style>
+    </style>
   </template>
 </dom-module>