expand: fix short option `-t` argument separator (#12493)

`expand` doesn't accept the equals sign '=' as a separator between the short option `-t` and its arguments.

Signed-off-by: David Tadokoro <davidbtadokoro@usp.br>

pages.it/common/expand.md

@@ -17,8 +17,8 @@
 
 - Sostituisci i tab con un determinato numero di spazi, non 8 (default):
 
-`expand -t={{numero_spazi}} {{file}}`
+`expand -t {{numero_spazi}} {{file}}`
 
 - Utilizza una lista separata da virgole di posizioni esplicite di tab:
 
-`expand -t={{1,4,6}}`
+`expand -t {{1,4,6}}`

pages/common/expand.md

@@ -17,8 +17,8 @@
 
 - Have tabs a certain number of characters apart, not 8:
 
-`expand -t={{number}} {{path/to/file}}`
+`expand -t {{number}} {{path/to/file}}`
 
 - Use a comma separated list of explicit tab positions:
 
-`expand -t={{1,4,6}}`
+`expand -t {{1,4,6}}`