add half space keyboard shortcuts

Author: mir hossein

README.md

@@ -47,7 +47,7 @@ for example when string should only contains persian words and spaces just conca
 ### :white_square_button: Space
 
 
-This ranges include all kind of space, specially ZERO WIDTH NON-JOINER and NARROW NO-BREAK SPACE that known as hald space and massively are using in Persian texts.
+This ranges include all kind of space, specially ZERO WIDTH NON-JOINER (Shift+B in Persian keyboard layout in linux) and NARROW NO-BREAK SPACE (Shift+Space in Persian keyboard layout in linux) that known as half space and massively are using in Persian texts.
 
 
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