Added a rule to match az binary sub-command misses (#834)

README.md

@@ -175,6 +175,7 @@ following rules are enabled by default:
 * `adb_unknown_command` – fixes misspelled commands like `adb logcta`;
 * `ag_literal` – adds `-Q` to `ag` when suggested;
 * `aws_cli` – fixes misspelled commands like `aws dynamdb scan`;
+* `az_cli` – fixes misspelled commands like `az providers`;
 * `cargo` – runs `cargo build` instead of `cargo`;
 * `cargo_no_command` – fixes wrongs commands like `cargo buid`;
 * `cat_dir` – replaces `cat` with `ls` when you try to `cat` a directory;