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

tldr/windows/reg

@@ -0,0 +1,22 @@
+---
+syntax: markdown
+tags: [tldr, windows]
+source: https://github.com/tldr-pages/tldr.git
+---
+# reg
+
+> Manage keys and their values in the Windows registry.
+> Some subcommands such as `reg add` have their own usage documentation.
+> More information: <https://learn.microsoft.com/windows-server/administration/windows-commands/reg>.
+
+- Execute a registry command:
+
+`reg {{command}}`
+
+- Display general information and list all available commands:
+
+`reg /?`
+
+- Display help for a specific command:
+
+`reg {{command}} /?`