docs: gcc -> GCC

Reviewed-by: Daniel Stone <daniels@collabora.com>
Reviewed-by: Adam Jackson <ajax@redhat.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/7060>
diff --git a/docs/helpwanted.rst b/docs/helpwanted.rst
index 8c5eafb..75e5a0c 100644
--- a/docs/helpwanted.rst
+++ b/docs/helpwanted.rst
@@ -12,7 +12,7 @@
    helpful.
 #. **Driver debugging.** There are plenty of open bugs in the `bug
    database <https://gitlab.freedesktop.org/mesa/mesa/-/issues>`__.
-#. **Remove aliasing warnings.** Enable gcc's
+#. **Remove aliasing warnings.** Enable GCC's
    ``-Wstrict-aliasing=2 -fstrict-aliasing`` arguments, and track down
    aliasing issues in the code.
 #. **Contribute more tests to**
diff --git a/docs/releasing.rst b/docs/releasing.rst
index 95ae6f5..63898b1 100644
--- a/docs/releasing.rst
+++ b/docs/releasing.rst
@@ -131,7 +131,7 @@
 
        ralloc: don't leave out the alignment factor
 
-       Experimentation shows that without alignment factor gcc and clang choose
+       Experimentation shows that without alignment factor GCC and clang choose
        ...
 
        (cherry picked from commit ff494fe999510ea40e3ed5827e7818550b6de126)
diff --git a/docs/versions.rst b/docs/versions.rst
index 420bb41..b50b515 100644
--- a/docs/versions.rst
+++ b/docs/versions.rst
@@ -1107,7 +1107,7 @@
 -  fixed bad teximage error check conditional (bug 476846)
 -  fixed demos readtex.c compilation problem on Windows (Karl Schultz)
 -  added missing glGet() query for GL_MAX_TEXTURE_LOD_BIAS_EXT
--  silence some compiler warnings (gcc 2.96)
+-  silence some compiler warnings (GCC 2.96)
 -  enable the #define GL_VERSION_1_3 in GL/gl.h
 -  added GL 1.3 and GLX 1.4 entries to gl_mangle.h and glx_mangle.h
 -  fixed glu.h typedef problem found with MSDev 6.0
@@ -1442,7 +1442,7 @@
 -  glColor3 functions sometimes resulted in undefined alpha values
 -  fixed FP divide by zero error seen on VMS with xlockmore, others
 -  fixed vertex/fragment program debug problem (bug 873011)
--  building on AIX with gcc works now
+-  building on AIX with GCC works now
 -  glDeleteProgramsARB failed for ARB fragment programs (bug 876160)
 -  glDrawRangeElements tried to modify potentially read-only storage
 -  updated files for building on Windows
@@ -1470,7 +1470,7 @@
 -  two-sided lighting and vertex program didn't work (bug 887330)
 -  stores to program parameter registers in vertex state programs didn't
    work.
--  fixed glOrtho bug found with gcc 3.2.2 (RH9)
+-  fixed glOrtho bug found with GCC 3.2.2 (RH9)
 -  glXCreateWindow() wasn't fully implemented (bug 890894)
 -  generic vertex attribute arrays didn't work in display lists
 -  vertex buffer objects' default usage and access fields were wrong
@@ -1573,7 +1573,7 @@
 
 Changes:
 
--  fixed a bunch of compiler warnings found with gcc 3.4
+-  fixed a bunch of compiler warnings found with GCC 3.4
 -  bug reports should to go bugzilla.freedesktop.org
 
 6.3 July 20, 2005