fix: don't show "final" after "{ /* see-below */ }" in the HTML and AsciiDoc outputs

That is, don't show ill-formed code. Also, "{ /* see-below */ }" is now
always followed by a semicolon, even if the record is final and/or base
classes are present.

Author: Gennaro Prota

share/mrdocs/addons/generator/common/partials/symbol/signature/record.hbs

@@ -17,8 +17,12 @@
     {{#unless (eq access ../defaultAccess)}} {{access}}{{/unless~}}
     {{#if isVirtual}} virtual{{/if}} {{>type/declarator type~}}
 {{/each~}}
-{{!-- Don't show a semicolon if the record is final, because something
-      like `class A final;` is ill-formed (`final` can't be used on a
-      non-defining declaration). Similarly, don't show a semicolon if
-      there are base classes. --}}
-{{/unless}}{{#isSeeBelow}} { /* see-below */ }{{/isSeeBelow}}{{#if isFinal}} final{{else}}{{#if bases}}{{!-- no semicolon --}}{{else}};{{/if}}{{/if}}
+{{/unless}}
+{{!-- Unless we are going to show a class body ("{ ... }"), don't add a
+      semicolon if the record is final, because something like `class A
+      final;` is ill-formed (`final` can't be used on a non-defining
+      declaration). Similarly, don't show a semicolon if there are base
+      classes. --}}
+{{~#if isFinal}} final{{/if~}}
+{{~#unless isSeeBelow}}{{~#unless isFinal}}{{~#unless bases}};{{/unless~}}{{/unless~}}{{/unless~}}
+{{~#isSeeBelow}} { /* see-below */ };{{/isSeeBelow~}}