fix(companies): change heading to Employers Sponsoring VanRuby

- Update heading from "Companies Sponsoring VanRuby" to "Employers Sponsoring VanRuby"

🤖 Generated with [Claude Code](https://claude.com/claude-code)

Co-Authored-By: Claude <[email protected]>

Author: mrleeio

companies.html

@@ -27,7 +27,7 @@ <h2 class="text-center fw-semibold">Companies Hiring Ruby Developers in Vancouve
 {% if sponsors.size > 0 %}
 <div class="mb-5 mt-5">
   <h3 class="mb-3">
-    Companies Sponsoring VanRuby
+    Employers Sponsoring VanRuby
   </h3>
   <p class="text-muted mb-4">These companies actively support the VanRuby community and are currently hiring Ruby developers.</p>
   <div class="table-responsive rounded-3 overflow-hidden mb-4">