typos (#403)

Author: timcappalli

index.html

@@ -301,7 +301,7 @@ <h3>
         &lt;/script&gt;
       </pre>
       <p>
-        Simliarly, when a site needs to [=digital credential/issuance|issue=] a
+        Similarly, when a site needs to [=digital credential/issuance|issue=] a
         digital credential, the Digital Credentials API mediates the issuance
         of a digital credential between the site, the user agent, and the
         [=holder=].
@@ -673,7 +673,7 @@ <h2>
     </h2>
     <p>
       The Digital Credentials API leverages the [[[credential-management]]]
-      specificaion, allowing [=user agents=] to mediate the [=digital
+      specification, allowing [=user agents=] to mediate the [=digital
       credential/issuance=] and [=digital credential/presentation=] of
       [=digital credentials=].
     </p>