Update help topics re support for Delphi 13

The about compiler checks topic and configure compilers dialogue box
help topic were updated re the extension of support for test compilation
to include Delphi 13.

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 12 Athens and Free Pascal.
+      Delphi 13 Florence 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 12 Athens. Click the <em>Detect
+      compilers from Delphi 2 to Delphi 13 Florence. 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.