":": add page (#12091)

* ":": add page

---------

Co-authored-by: Sebastiaan Speck <12570668+sebastiaanspeck@users.noreply.github.com>
Co-authored-by: Alejandro Cervera <96702705+tricantivu@users.noreply.github.com>
Co-authored-by: K.B.Dharun Krishna <kbdharunkrishna@gmail.com>
Co-authored-by: Vitor Henrique <87824454+vitorhcl@users.noreply.github.com>

pages/common/colon.md

@@ -0,0 +1,12 @@
+# colon
+
+> Returns a successful exit status code of 0.
+> More information: <https://pubs.opengroup.org/onlinepubs/9699919799/utilities/V3_chap02.html#colon>.
+
+- Return a successful exit code:
+
+`:`
+
+- Make a command always exit with 0:
+
+`{{command}} || :`