Update index.html

Author: annevk

index.html

@@ -333,7 +333,7 @@ <h3>
           <p>
             The <dfn>declarative push message parser</dfn> given a [=/byte sequence=]
             <var>bytes</var>, [=/origin=] <var>origin</var>, [=/URL=] <var>baseURL</var>, and
-            {{EpochTimestamp}} <var>fallbackTimestamp</var> runs these steps. They return failure
+            {{EpochTimeStamp}} <var>fallbackTimestamp</var> runs these steps. They return failure
             or a [=/declarative push message parser result=].
           </p>
           <ol>