[Ink] Update example description to only have one space (#5018)

Closes #5015 

| Before | After |
| ------- | ------- |
|![simulator screen shot - iphone 8 - 2018-09-05 at 15 40 55](https://user-images.githubusercontent.com/7131294/45116875-18ed2800-b122-11e8-81d5-936b82daa44b.png)|![simulator screen shot - iphone 8 - 2018-09-05 at 15 39 51](https://user-images.githubusercontent.com/7131294/45116881-1c80af00-b122-11e8-90e0-60714fb55e7e.png)|

components/Ink/examples/supplemental/InkTypicalUseSupplemental.m

@@ -78,11 +78,11 @@ @implementation InkTypicalUseViewController (CatalogByConvention)
 
 + (NSDictionary *)catalogMetadata {
   return @{
-    @"breadcrumbs": @[ @"Ink", @"Ink" ],
-    @"description": @"The Ink component provides a radial action in the form of a visual ripple "
-    @" of ink expanding outward from the user's touch.",
-    @"primaryDemo": @YES,
-    @"presentable": @YES,
+    @"breadcrumbs" : @[ @"Ink", @"Ink" ],
+    @"description" : @"The Ink component provides a radial action in the form of a visual ripple "
+                     @"of ink expanding outward from the user's touch.",
+    @"primaryDemo" : @YES,
+    @"presentable" : @YES,
   };
 }