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

tldr/windows/reg-add

@@ -0,0 +1,29 @@
+---
+syntax: markdown
+tags: [tldr, windows]
+source: https://github.com/tldr-pages/tldr.git
+---
+# reg add
+
+> Add new keys and their values to the registry.
+> More information: <https://learn.microsoft.com/windows-server/administration/windows-commands/reg-add>.
+
+- Add a new registry key:
+
+`reg add {{key_name}}`
+
+- Add a new value under a specific key:
+
+`reg add {{key_name}} /v {{value}}`
+
+- Add a new value with specific data:
+
+`reg add {{key_name}} /d {{data}}`
+
+- Add a new value to a key with a specific data type:
+
+`reg add {{key_name}} /t {{type}}`
+
+- Forcefully overwrite the existing registry value without a prompt:
+
+`reg add {{key_name}} /f`