Merge pull request #436 from w3c/fix-caps

Made reading systems, personal computer, and smart speakers lower case

Author: GeorgeKerscher

UX-Guide-Metadata/draft/principles/index.html

@@ -144,9 +144,9 @@ <h3>Terminology</h3>
          <p>The term digital publication is used in this document to refer to publications produced in any number of digital formats. Digital publications are not limited to books, but encompass any written, visual, or audio work distributed and read in digital form.</p>
          <p>Some examples of digital publications include ebooks, audiobooks, manga, comic books, journals, digital textbooks, picture books, and children's picture books with accompanying audio. The formats they come in include EPUB, PDF, and Digital Talking Books (DTB).</p>
       </dd>
-      <dt><dfn>Reading System</dfn></dt>
+      <dt><dfn>reading system</dfn></dt>
 <dd>
-<p>All digital publications require a Reading System to present the publication to the end user. Reading Systems may be Apps that run on a smart phone or tablet. There are Reading Systems which are  applications  that run on  Personal Computers. There are also Reading Systems that are integrated in to dedicated devices devoted to a single purpose, for presenting a publication. There are even skills   that run on Smart Speakers that can be considered Reading Systems.</p>
+<p>All digital publications require a reading system to present the publication to the end user. Reading Systems may be Apps that run on a smart phone or tablet. There are Reading Systems which are  applications  that run on  personal computers. There are also Reading Systems that are integrated in to dedicated devices devoted to a single purpose, for presenting a publication. There are even skills   that run on smart speakers that can be considered Reading Systems.</p>
 </dd>
 <dt><dfn>electronic braille</dfn></dt>
 <dt><dfn>refreshable braille</dfn></dt>