fix: don't hardcode the API endpoint for meetup subscribe links

content/english/meetups/seattle.md

@@ -3,6 +3,7 @@ title="Seattle's Mailing List"
 date="2024-11-03T12:00:00-08:00"
 description="Receive Handmade meetup invites from the Emerald City!"
 thumbnail="/images/meetups/distantworlds_space.jpg"
+api_endpoint="https://api.handmadecities.com/v1/meetups/seattle"
 
 [[hosts]]
 name="Allen Webster"

layouts/meetups/single.html

@@ -15,7 +15,7 @@
             {{ .Params.Description }}
           </div>
           
-          <form action = "https://api.handmadecities.com/v1/meetups/seattle" method = "POST">
+          <form action = "{{ .Params.Api_endpoint }}" method = "POST">
           <input type = "email" class="col-8 text-black" id = "email" name = "email" placeholder='Email...' required/>
           <br>
           <br>