[docs] Update cleos net commands and net plugin description

docs/02_cleos/03_command-reference/net/disconnect.md

@@ -1,17 +1,56 @@
+## Command
+```sh
+cleos net disconnect [OPTIONS] host
+```
+
+**Where:**
+* [OPTIONS] = See **Options** in the [**Command Usage**](command-usage) section below.
+* host = The hostname:port to disconnect from.
+
+**Note:** The arguments and options enclosed in square brackets are optional.
+
 ## Description
-close an existing connection
+Close an existing connection to a specified peer. This command allows an operator's node to disconnect from another peer without restarting the node.
+
+## Command Usage
+The following information shows the different positionals and options you can use with the `cleos net disconnect` command:
+
+### Positionals
+* `host` _TEXT_ REQUIRED - The hostname:port to disconnect from.
+
+### Options
+* `-h,--help` - Print this help message and exit.
+
+## Requirements
+Make sure you meet the following requirements:
 
-**Command**
+* Install the currently supported version of `cleos`.
+[[info | Note]]
+| `cleos` is bundled with the EOSIO software. [Installing EOSIO](../../../00_install/index.md) will also install the `cleos` and `keosd` command line tools.
+* You have access to a producing node instance with the [`net_api_plugin`](../../../01_nodeos/03_plugins/net_api_plugin/index.md) loaded.
 
+## Examples
+The following examples demonstrate how to use the `cleos net disconnect` command:
+
+* Instruct default local node (listening at default http address `http://127.0.0.1:8888`) to disconnect from peer node listening at p2p address `localhost:9022`:
 ```sh
-cleos net disconnect
+cleos net disconnect localhost:9022
+```
+**Output:**
+```console
+"connection removed"
 ```
 
-**Output**
-
+* Instruct local node listening at http address `http://127.0.0.1:8001` to disconnect from peer node listening at p2p address `localhost:9022`:
+```sh
+cleos -u http://127.0.0.1:8001 net disconnect localhost:9022
+```
+**Output:**
 ```console
-Usage: cleos net disconnect host
+"connection removed"
+```
 
-Positionals:
-  host TEXT                   The hostname:port to disconnect from.
+**Note:** If any of the above commands are re-executed, `cleos` returns the following message as expected:  
+```console
+"no known connection for host"
 ```