Refactor the delimiter name (#4659)

### What problem does this PR solve?

Rename from 'Diagonal' to 'Forward slash'
Rename from 'Minus' to 'Dash'

issue: #4655 

### Type of change

- [x] Refactoring

---------

Signed-off-by: Jin Hai <haijin.chn@gmail.com>

web/src/locales/en.ts

@@ -1163,8 +1163,8 @@ This delimiter is used to split the input text into several text pieces echo of
         lineBreak: 'Line break',
         tab: 'Tab',
         underline: 'Underline',
-        diagonal: 'Diagonal',
-        minus: 'Minus',
+        diagonal: 'Forward slash',
+        minus: 'Dash',
         semicolon: 'Semicolon',
       },
       addVariable: 'Add variable',