Fix Call buttons: tel: fallback instead of mailto

The Call buttons fell back to mailto: when the tel-rewrite script hadn't
run, so tapping "Call" opened an email draft on mobile. Switch the static
fallback to tel:+17789856736 (number is already public in JSON-LD, so no
added scraper exposure). Display text unchanged. Email Michael buttons untouched.

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>

index.html

@@ -277,7 +277,7 @@
       <p class="lf-alt">Prefer to reach out directly?</p>
       <p class="actions center">
         <a class="btn link" href="mailto:michael@opencommunications.consulting?subject=A%20conversation%20—%20Open%20Communications">Email Michael</a>
-        <a class="btn link tel" data-p1="778" data-p2="985" data-p3="6736" href="mailto:michael@opencommunications.consulting">Call 778&#8209;985&#8209;OPEN (6736)</a>
+        <a class="btn link tel" data-p1="778" data-p2="985" data-p3="6736" href="tel:+17789856736">Call 778&#8209;985&#8209;OPEN (6736)</a>
       </p>
       <p class="promise">The first conversation is free and commits you to nothing.</p>
     </div>

inga.html

@@ -275,7 +275,7 @@
       <p class="actions center">
         <a class="btn" href="https://cal.shopwisdom.ca/michaelvictory/20min-opencommunications-meeting" data-cal-link="michaelvictory/20min-opencommunications-meeting" data-cal-origin="https://cal.shopwisdom.ca" data-cal-config='{"theme":"light"}'>Book a conversation</a>
         <a class="btn link" href="mailto:michael@opencommunications.consulting?subject=A%20conversation%20with%20Inga%20—%20Open%20Communications">Email Michael</a>
-        <a class="btn link tel" data-p1="778" data-p2="985" data-p3="6736" href="mailto:michael@opencommunications.consulting">Call 778&#8209;985&#8209;OPEN (6736)</a>
+        <a class="btn link tel" data-p1="778" data-p2="985" data-p3="6736" href="tel:+17789856736">Call 778&#8209;985&#8209;OPEN (6736)</a>
       </p>
       <p class="promise">The first conversation is free and commits you to nothing.</p>
     </div>