m/ / and / / examples added

Added examples to help illustrate difference between m/ / and / /.  Zoffix provided the examples.  I provided the learning.  An example for rx/ / is needed.  As a newbie, this info is very helpful and rare.  It is not in Think Perl 6, ttbomk.  And definitely not in Perl6Intro.com.  Needed info or something better.

Author: COMBORICO

doc/Language/regexes.pod6

@@ -28,6 +28,11 @@ is forbidden because it clashes with adverbs, such as C<rx:i/abc/>
 (case insensitive regexes), and round parentheses indicate a function call
 instead.
 
+Example of difference between 'm/ /' and '/ /' operators:
+
+    $_ = "abc"; my $match = m/.+/; say $match;       # Output: ｢abc｣
+    $_ = "abc"; my $match =  /.+/; say $match;       # Output: /.+/
+
 Whitespace in regexes is generally ignored (except with the C<:s> or,
 completely, C<:sigspace> adverb).