correct docs

command/alias.go

@@ -41,10 +41,13 @@ var aliasSetCmd = &cobra.Command{
 	that follow the invocation of an alias will be inserted appropriately.
 
 	If '--shell' is specified, the alias will be run through a shell interpreter (sh or pwsh). This allows you
-	to compose commands with "|" or redirect output. Note that extra arguments following the alias
+	to compose commands with "|" or redirect with ">". Note that extra arguments following the alias
 	will not be automatically passed to the expanded expression. To have a shell alias receive
 	arguments, you must explicitly accept them using "$1", "$2", etc or "$@" to accept all of them.
 
+	Platform note: on Windows, shell aliases are executed via "sh" as installed by Git For Windows. If
+	you have installed git on Windows in some other way, shell aliases may not work for you.
+
 	Quotes must always be used when defining a command as in the examples.`),
 	Example: heredoc.Doc(`
 	$ gh alias set pv 'pr view'
@@ -57,15 +60,9 @@ var aliasSetCmd = &cobra.Command{
 	$ gh epicsBy vilmibm
 	#=> gh issue list --author="vilmibm" --label="epic"
 
-	# On macOS and Linux:
 	$ gh alias set --shell igrep 'gh issue list --label="$1" | grep $2'
 	$ gh igrep epic foo
-	#=> gh issue list --label="epic" | grep "foo"
-
-	# On Windows (Powershell):
-	$ gh alias set --shell igrep 'gh issue list --label=$args[0] | Select-String -Pattern $args[1]
-	$ gh igrep epic foo
-	#=> gh issue list --label=epic | Select-String -Pattern foo`),
+	#=> gh issue list --label="epic" | grep "foo"`),
 	Args: cobra.ExactArgs(2),
 	RunE: aliasSet,
 }