[PATCH 5.6.0 DOC] "literal" removed from C<> explanation

The use of "literal" in the explanation of C<> is arguably different
from the use of the same word in the documantation for e.g. q{}. C<> is
a typesetting hint, not a quoting mechanism.


*** perlpod.pod~        Sun Mar 12 04:14:49 2000
--- perlpod.pod Fri Mar 17 18:58:49 2000
***************
*** 157,163 ****
      I<text>     italicize text, used for emphasis or variables
      B<text>     embolden text, used for switches and programs
      S<text>     text contains non-breaking spaces
!     C<code>   literal code
      L<name>     A link (cross reference) to name
                    L<name>             manual page
                    L<name/ident>       item in manual page
--- 157,164 ----
      I<text>     italicize text, used for emphasis or variables
      B<text>     embolden text, used for switches and programs
      S<text>     text contains non-breaking spaces
!     C<code>   render code in a typewriter font, or give some other
!                 indication that this represents program text.
      L<name>     A link (cross reference) to name
                    L<name>             manual page
                    L<name/ident>       item in manual page

• [PATCH 5.6.0 DOC] "literal" removed from C<> explanation by Wolfgang Laun