fix: spacing in pronunciation.html (#4645)

Just minor typo fix: add a space between "characters" and "(Kanji)".

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Co-authored-by: Mike Gower <[email protected]>
Co-authored-by: Mike Gower <[email protected]>

Author: huyenltnguyen

understanding/20/pronunciation.html

@@ -42,7 +42,7 @@ <h2>Intent of Pronunciation</h2>
          of the sentence, then nothing is required.  If it cannot then some mechanism for determining
          the proper pronunciation would be required. Additionally, in some languages certain
          characters can be pronounced in different ways. In Japanese, for example, there are
-         characters like Han characters(Kanji) that have multiple pronunciations. Screen readers
+         characters like Han characters (Kanji) that have multiple pronunciations. Screen readers
          may speak the characters incorrectly without the information on pronunciation. When
          read incorrectly, the content will not make sense to users.
       </p>