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

tldr/pio-check

@@ -0,0 +1,29 @@
+---
+syntax: markdown
+tags: [tldr, common]
+source: https://github.com/tldr-pages/tldr.git
+---
+# pio check
+
+> Perform a static analysis check on a PlatformIO project.
+> More information: <https://docs.platformio.org/en/latest/core/userguide/cmd_check.html>.
+
+- Perform a basic analysis check on the current project:
+
+`pio check`
+
+- Perform a basic analysis check on a specific project:
+
+`pio check --project-dir {{project_dir}}`
+
+- Perform an analysis check for a specific environment:
+
+`pio check --environment {{environment}}`
+
+- Perform an analysis check and only report a specified defect severity type:
+
+`pio check --severity {{low|medium|high}}`
+
+- Perform an analysis check and show detailed information when processing environments:
+
+`pio check --verbose`