Fix spacemacs/c-c++-tags-find-references-at-point

Rename the spacemacs/c-c++-tags-find-references-at-point and
rtags-find-references-at-point to fix the c-c++-modes key binding:
          "g," 'spacemacs/c-c++-tags-find-references-at-point
when c-c++-backend is set to 'rtags.

This changeset reverts some of the changes introduced by
the commit 445f6af.

CHANGELOG.develop

@@ -922,7 +922,7 @@ Benner and Paweł Siudak):
 - Fix issue with =c++-enable-clang-format-on-save= not taking effect when set
   (thanks to Silver Chan)
 - Added lsp support using either cquery or ccls backends (thanks to Cormac
-  Cannon and Fangrui Song)
+  Cannon, Sergey Litovchuk and Fangrui Song)
 **** Cfengine
 - Fix publish in README (thanks to Eugene Yaremenko)
 - Add =ob-cfengine3= (thanks to Nick Anderson)

layers/+lang/c-c++/funcs.el

@@ -160,9 +160,9 @@ and the arguments for flyckeck-clang based on a project-specific text file."
            rtags-last-request-not-indexed)
       (gtags-find-tag)))
 
-(defun spacemacs/c-c++-tags-find-refs-at-point (&optional prefix)
+(defun spacemacs/c-c++-tags-find-references-at-point (&optional prefix)
   (interactive "P")
-  (if (and (not (rtags-find-refs-at-point prefix))
+  (if (and (not (rtags-find-references-at-point prefix))
            rtags-last-request-not-indexed)
       (gtags-find-rtag)))