change ``bash headers to ``sh

basics/column.md

@@ -5,32 +5,32 @@ tags: [ "basics", "format", "json" ]
 
 Put output into column.
 
-```bash
+```sh
 du -h /etc/* | column
 ```
 
 Reformat file with an explicit separator (`-s`):
 
-```bash
+```sh
 column -ts: /etc/passwd
 ```
 
 Give columns names (`-N`), so you can hide some (`-H`):
 
-```bash
+```sh
 column -ts: -N User,PW,UID,GID,Description,Home,shell -H PW,GID /etc/passwd
 ```
 
 Reorder with `-O` (unspecified items remain):
 
 
-```bash
+```sh
 column -ts: -N User,PW,UID,GID,Description,Home,shell -H PW,GID -O User,Description,shell /etc/passwd 
 ```
 
 Output to json format with `-J`:
 
-```bash
+```sh
 column -J -ts: -H PW,GID,shell -N User,PW,UID,GID,Description,Home,shell /etc/passwd
 ```