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

tldr/doctl-balance

@@ -0,0 +1,21 @@
+---
+syntax: markdown
+tags: [tldr, common]
+source: https://github.com/tldr-pages/tldr.git
+---
+# doctl balance
+
+> Show the balance of a Digital Ocean account.
+> More information: <https://docs.digitalocean.com/reference/doctl/reference/balance/>.
+
+- Get balance of the account associated with the current context:
+
+`doctl balance get`
+
+- Get the balance of an account associated with an access token:
+
+`doctl balance get --access-token {{access_token}}`
+
+- Get the balance of an account associated with a specified context:
+
+`doctl balance get --context`