help: Updates contacts-connect page

Updates the sentence construct for the example text.

Ref: #84

gnome-help/C/contacts-connect.page

@@ -37,8 +37,10 @@
       <p>Select the contact from your contact list.</p>
     </item>
     <item>
-      <p>Press on the button of the <em>detail</em> that you want to use.
-      For example, to email your contact, press the button next the contact’s
+      <p>Click the button corresponding to the <em>detail</em> that you want to use.
+      For example, to email your contact, click the 
+      <media its:translate="no" type="image" src="figures/keyboard-key-mail.svg">
+      <span its:translate="yes">mail</span></media> button next to the contact’s 
       email address.</p>
     </item>
     <item>