.: remove trailing white spaces

blame tibor this one ;-)
```
find . -type f -not -name '*.png' -not -name '*.go' -not -name '*.md'
-not -name '*.tar' -not -name '*.pem' -not -path './vendor/*' -not -path
'./.git/*' -not -path '*/testdata/*' -not -path './docs/*images*' -not
-path '*/testfiles/*' -not -path './bundles/*' -not -path
'./docs/*static*/*' -not -path './docs/*article-img/*' -exec grep -HnEl
'[[:space:]]$' {} \; | xargs sed -iE 's/[[:space:]]*$//'
```

Signed-off-by: Vincent Batts <vbatts@redhat.com>

NOTICE

@@ -10,9 +10,9 @@ The following is courtesy of our legal counsel:
 
 
 Use and transfer of Docker may be subject to certain restrictions by the
-United States and other governments.  
+United States and other governments.
 It is your responsibility to ensure that your use and/or transfer does not
-violate applicable laws. 
+violate applicable laws.
 
 For more information, please see http://www.bis.doc.gov