Update index.md

Author: kristenORM

styleguide/index.md

@@ -751,7 +751,7 @@ title: O'Reilly Style Guide
 <p>Companies are always singular. So, for example, “Apple emphasizes the value of aesthetics in its product line. Consequently, it dominates the digital-music market” is correct. “Apple emphasize the value of aesthetics in their product line. They dominate the digital-music market” is <em>not</em>. (Also applies to generic terms “organization,” “team,” “group,” etc.)</p>
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-<p>When referring to software elements or labels, always capitalize words that are capitalized on screen. Put quotes around any multiword element names that are lowercase on screen and would thus be hard to distinguish from the rest of the text (e.g., Click “Don’t select object until rendered” only if necessary.)</p>
+<p>When referring to software elements or labels, always capitalize words that are capitalized on screen. Put quotes around any multiword element names that are lowercase or mixed case on screen and would thus be hard to distinguish from the rest of the text (e.g., Click “Don’t select object until rendered” only if necessary.)</p>
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 <p>Use “between” for two items, “among” for three or more. Use “each other” for two, “one another” for three or more.</p>