Correcting the index.

index.html

@@ -10,7 +10,7 @@
       <h3>Choose Your Version</h3>
       <br/>
       <div style="margin: 0 12px;">
-        <button onclick="location.href='index.v4.html'">V1.0  - PathCheck's PaperCred Specification with Base36 Signatures/Hashes</button>
+        <button onclick="location.href='index.v5.html'">V1.0.1  - PathCheck's with Base36 Signatures/Hashes</button>
         <br/ ><br/>
       </div>
       <div style="margin: 0 12px;">