Remove reference to Windows

PowerShell on Linux requires the same escapeing of braces as on Windows

Co-authored-by: HonkingGoose <[email protected]>

Author: 2 people

book/07-git-tools/sections/revision-selection.asc

@@ -184,12 +184,12 @@ If you have a UNIX or Linux background, you can think of the reflog as Git's ver
 .Escaping braces in PowerShell
 ====
 
-When using PowerShell on Windows, braces like `{` and `}` are special characters and must be escaped.
+When using PowerShell, braces like `{` and `}` are special characters and must be escaped.
 You can escape them with a backtick ` or put the commit reference in quotes:
 
 [source,console]
 ----
-$ git show HEAD@{0}     # will NOT work on Windows
+$ git show HEAD@{0}     # will NOT work
 $ git show HEAD@`{0`}   # OK
 $ git show "HEAD@{0}"   # OK
 ----