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

tldr/windows/test-json

@@ -0,0 +1,22 @@
+---
+syntax: markdown
+tags: [tldr, windows]
+source: https://github.com/tldr-pages/tldr.git
+---
+# Test-Json
+
+> Test whether a string is a valid JSON document.
+> This command can only be used through PowerShell.
+> More information: <https://learn.microsoft.com/powershell/module/microsoft.powershell.utility/test-json>.
+
+- Test if a string from `stdin` is in JSON format:
+
+`'{{string}}' | Test-Json`
+
+- Test if a string JSON format:
+
+`Test-Json -Json '{{json_to_test}}'`
+
+- Test if a string from `stdin` matches a specific schema file:
+
+`'{{string}}' | Test-Json -SchemaFile {{path	o\schema_file.json}}`