Make ini file example not nested twice

In the rendering on docs.raku.org it's a raku-code/raku-lang with a
nohighlights inside of it, which is probably not what we want

doc/Language/regexes.rakudoc

@@ -967,10 +967,10 @@ first matching alternative wins.
 
 For example, C<ini> files have the following form:
 
-    =begin code :lang<text>
-    [section]
-    key = value
-    =end code
+=begin code :lang<text>
+[section]
+key = value
+=end code
 
 Hence, if you parse a single line of an C<ini> file, it can be either a
 section or a key-value pair and the regex would be (to a first