Move pages under tldr, lint run.sh, update docs

tldr/windows/get-alias

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+---
+syntax: markdown
+tags: [tldr, windows]
+source: https://github.com/tldr-pages/tldr.git
+---
+# Get-Alias
+
+> List and get command aliases in the current PowerShell session.
+> This command can only be run under PowerShell.
+> More information: <https://learn.microsoft.com/powershell/module/microsoft.powershell.utility/get-alias>.
+
+- List all aliases in the current session:
+
+`Get-Alias`
+
+- Get the aliased command name:
+
+`Get-Alias {{command_alias}}`
+
+- List all aliases assigned to a specific command:
+
+`Get-Alias -Definition {{command}}`
+
+- List aliases that begins with `abc`, excluding those which ends at `def`:
+
+`Get-Alias {{abc}}* -Exclude *{{def}}`