doc: update darkirc private messages section

doc/src/misc/darkirc/private_message.md

@@ -12,14 +12,16 @@ when you first run `darkirc`.
 Generate a keypair using the following command: 
 
 ```shell
-% darkirc --gen-keypair
+% darkirc --gen-chacha-keypair
 ```
 This will generate a Public Key and a Private Key.
 
-Save the Private key safely & add it to the `darkirc_config.toml` file as shown below.
+Save the Private key safely & add it to the `darkirc_config.toml` 
+file under [crypto] as shown below.
 
 ```toml
-[private_key.”your_private_key_goes_here”]
+[crypto]
+dm_chacha_secret.”your_private_key_goes_here”
 ```
 
 To share your Public Key with a user over `darkirc` you can use one of the 
@@ -40,22 +42,20 @@ privately chat after they have each other's public keys:
 Alice would add bob to her contact list in her own config file:
 ```toml
 [contact.”bob”]
-contact_pubkey = “D6UzKA6qCG5Mep16i6pJYkUCQcnp46E1jPBsUhyJiXhb”
+dm_chacha_public = “D6UzKA6qCG5Mep16i6pJYkUCQcnp46E1jPBsUhyJiXhb”
 ```
 
 And Bob would do the same:
 ```toml
 [contact.”alice”]
-contact_pubkey = “9sfMEVLphJ4dTX3SEvm6NBhTbWDqfsxu7R2bo88CtV8g”
-
+dm_chacha_public = “9sfMEVLphJ4dTX3SEvm6NBhTbWDqfsxu7R2bo88CtV8g”
 ```
 
-
 Lets see an Example where 'alice' sends “Hi” message to 'bob' using 
 the /msg command  
-     
-     /msg bob Hi
-
+```     
+/msg bob Hi
+```
 
 <u>Note for Weechat Client Users:</u>\
 When you private message someone as shown above, the buffer will not 
@@ -66,16 +66,16 @@ the recent message which she just send to 'bob' until 'bob' replies,
 but 'bob' will get a buffer shown on his irc client with the message 'Hi'.      
 
 Reply from 'bob' to 'alice' 
-
-    /msg alice welcome!
-
+```
+/msg alice welcome!
+```
 
 Or instead of `/msg` command, you can use:
 ```
 /query bob hello
 ```
 This works exactly the same as `/msg` except it will open a new buffer 
-with Bob in your client regardless.
+with Bob in your client regardless of sending a msg or not.
 
 <u><b>Note</b></u>: The contact name is not the irc nickname, it can 
 be anything you want, and you should use it when DMing.
@@ -84,6 +84,6 @@ be anything you want, and you should use it when DMing.
 case you lost your Public Key and you still have your Private key in 
 `darkirc_config.toml` file, you recover the Public Key like so:
 ```shell
-% darkirc --recover-pubkey {your_private_key}
+% darkirc --get_chacha_pubkey <chacha-secret>
 ```