title: Regex for Matching Apostrophe 's' words
body: <p>I'm trying to create a regex to match a word that has or doesn't have an apostrophe 's' at the end.  For the below example, I'd like add a regex to replace the apostrophe with the regex to match either an apostrophe 's' or just an 's'.  </p>
  
  <pre><code>Philip K Dick's Electric Dreams
  Philip K Dicks Electric Dreams
  </code></pre>
  
  <p>What I am trying so far is below, but I'm not getting it to match correctly.  Any help here is great.  Thanks!</p>
  
  <pre><code>Philip K Dick[\'[a-z]|[a-z]] Electric Dreams
  </code></pre>