maint: fix some typos in comments

* NEWS: s/commmand/command/
* cfg.mk: Adjust old_NEWS_hash with `make update-NEWS-hash`.
* src/expand-common.c: s/specifed/specified/
* src/pr.c: s/e.g/e.g./
* tests/misc/comm.pl: s/ouput/output/
Fixes https://bugs.gnu.org/61405

NEWS

@@ -2683,7 +2683,7 @@ GNU coreutils NEWS                                    -*- outline -*-
 
   rm -r --one-file-system works once again.
   The rewrite to make rm use fts introduced a regression whereby
-  a commmand of the above form would fail for all subdirectories.
+  a command of the above form would fail for all subdirectories.
   [bug introduced in coreutils-8.0]
 
   stat -f recognizes more file system types: k-afs, fuseblk, gfs/gfs2, ocfs2,

cfg.mk

@@ -49,7 +49,7 @@ export VERBOSE = yes
 # 4914152 9e
 export XZ_OPT = -8e
 
-old_NEWS_hash = 49269d8d99f4888a4e955d28cda50091
+old_NEWS_hash = ffba6793067438bae569f42acb4c5ab9
 
 # Add an exemption for sc_makefile_at_at_check.
 _makefile_at_at_check_exceptions = ' && !/^cu_install_prog/ && !/dynamic-dep/'

src/expand-common.c

@@ -34,7 +34,7 @@ bool convert_entire_line = false;
 /* If nonzero, the size of all tab stops.  If zero, use 'tab_list' instead.  */
 static uintmax_t tab_size = 0;
 
-/* If nonzero, the size of all tab stops after the last specifed.  */
+/* If nonzero, the size of all tab stops after the last specified.  */
 static uintmax_t extend_size = 0;
 
 /* If nonzero, an increment for additional tab stops after the last specified.*/

src/pr.c

@@ -2626,7 +2626,7 @@ print_stored (COLUMN *p)
    sequences or control prefixes.
 
    Note: the width of a clump is not necessarily equal to the number of
-   characters in clump_buff.  (e.g, the width of '\b' is -1, while the
+   characters in clump_buff.  (e.g., the width of '\b' is -1, while the
    number of characters is 1.) */
 
 static int

tests/misc/comm.pl

@@ -24,7 +24,7 @@ use strict;
 
 my $prog = 'comm';
 
-# Turn off localization of executable's ouput.
+# Turn off localization of executable's output.
 @ENV{qw(LANGUAGE LANG LC_ALL)} = ('C') x 3;
 
 my @inputs = ({IN=>{a=>"1\n3\n3\n3"}}, {IN=>{b=>"2\n2\n3\n3\n3"}});