doc: Fix -E option example of `guix shell'.

The TERM variable had been changed to OMP_NUM_THREADS in the example, but the
text hadn't been adjusted.

* doc/guix.texi (Invoking guix shell): Replace TERM with OMP_NUM_THREADS, as
well as its associated value (from "no-color" to "16").

1 files changed, 5 insertions, 4 deletions

diff --git a/doc/guix.texi b/doc/guix.texi
index dccc1fc9f76..99cef6fce3c 100644
--- a/doc/guix.texi
+++ b/doc/guix.texi
@@ -6847,10 +6847,11 @@ guix shell --pure --preserve=^SLURM -E OMP_NUM_THREADS=16 openmpi @dots{} \
   -- mpirun @dots{}
 @end example
 
-This example runs @command{mpirun} in a context where the only environment
-variables defined are @env{PATH}, environment variables whose name starts
-with @samp{SLURM}, variable @env{TERM} set to @samp{no=color}, as well as
-the usual ``precious'' variables (@env{HOME}, @env{USER}, etc.).
+This example runs @command{mpirun} in a context where the only
+environment variables defined are @env{PATH}, environment variables
+whose name starts with @samp{SLURM}, variable @env{OMP_NUM_THREADS} set
+to @samp{16}, as well as the usual ``precious'' variables (@env{HOME},
+@env{USER}, etc.).
 
 @item --search-paths
 Display the environment variable definitions that make up the