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

tldr/molecule

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+---
+syntax: markdown
+tags: [tldr, common]
+source: https://github.com/tldr-pages/tldr.git
+---
+# molecule
+
+> Molecule helps testing Ansible roles.
+> More information: <https://molecule.readthedocs.io>.
+
+- Create a new Ansible role:
+
+`molecule init role --role-name {{role_name}}`
+
+- Run tests:
+
+`molecule test`
+
+- Start the instance:
+
+`molecule create`
+
+- Configure the instance:
+
+`molecule converge`
+
+- List scenarios of the instance:
+
+`molecule matrix converge`
+
+- Log in into the instance:
+
+`molecule login`