doc: sort: be more descriptive than 'manual'

* src/sort.c (usage): Don't mention the ambiguous "manual",
rather "full documentation", echoing the language at the
bottom of each coreutils man page.
Fixes https://bugs.gnu.org/72914

diff --git a/src/sort.c b/src/sort.c
index 3357733c109262222d80ed598a70a11e57cf3a7b..4230d32d8414fdde0013883239f63c9ce7926e9b 100644 (file)
--- a/src/sort.c
+++ b/src/sort.c
@@ -445,7 +445,9 @@ Ordering options:\n\
 "), stdout);
       fputs (_("\
   -n, --numeric-sort          compare according to string numerical value;\n\
-                                see manual for which strings are supported\n\
+                                see full documentation for supported strings\n\
+"), stdout);
+      fputs (_("\
   -R, --random-sort           shuffle, but group identical keys.  See shuf(1)\n\
       --random-source=FILE    get random bytes from FILE\n\
   -r, --reverse               reverse the result of comparisons\n\