Revert doc string changes to f90.el

Problem reported by Glenn Morris in:
http://lists.gnu.org/archive/html/emacs-devel/2015-05/msg00596.html
* lisp/progmodes/f90.el (f90-mode, f90-abbrev-start):
Revert recent changes to doc strings, as it's intended that they
use grave accent, not quote.

1 files changed, 2 insertions, 2 deletions

diff --git a/lisp/progmodes/f90.el b/lisp/progmodes/f90.el
index 74e3234f05e..6264d3b7b82 100644
--- a/lisp/progmodes/f90.el
+++ b/lisp/progmodes/f90.el
@@ -1113,7 +1113,7 @@ For fixed format code, use `fortran-mode'.
  indented line.
 \\[f90-indent-subprogram] indents the current subprogram.
 
-Type `?' or `\\[help-command]' to display a list of built-in\
+Type `? or `\\[help-command] to display a list of built-in\
  abbrevs for F90 keywords.
 
 Key definitions:
@@ -2267,7 +2267,7 @@ Leave point at the end of line."
 ;; Abbrevs and keywords.
 
 (defun f90-abbrev-start ()
-  "Typing `\\[help-command]' or `?' lists all the F90 abbrevs.
+  "Typing `\\[help-command] or `? lists all the F90 abbrevs.
 Any other key combination is executed normally."
   (interactive "*")
   (self-insert-command 1)