Update help topics re support for Delphi 12

Author: delphidabbler

Src/Help/HTML/about_compiler_checks.htm

@@ -34,7 +34,7 @@ <h1>
     </p>
     <p>
       The supported compilers are the Win32 Delphi compilers from Delphi 2 to
-      Delphi 11.x Alexandria and Free Pascal.
+      Delphi 12 Athens and Free Pascal.
     </p>
     <h2>
       Configuring CodeSnip

Src/Help/HTML/dlg_configcompilers.htm

@@ -312,7 +312,7 @@ <h2>
     </h2>
     <p>
       <em>CodeSnip</em> can automatically detect the presence of Win 32 Delphi
-      compilers from Delphi 2 to Delphi 11.x Alexandria. Click the <em>Detect
+      compilers from Delphi 2 to Delphi 12 Athens. Click the <em>Detect
       Delphi Compilers</em> button to do this. Any supported installed version
       of Delphi will be recorded<sup>&dagger;</sup>. This can save considerable
 	  time and avoid errors.