Update ide-v2-serial-plotter.md

Add some explanation of the "label:value, label:value\n" format.

Author: drf5n

content/software/ide-v2/tutorials/ide-v2-serial-plotter/ide-v2-serial-plotter.md

@@ -85,7 +85,7 @@ void loop() {
   Serial.println(static_variable);
 }
 ```
-***The Serial Plotter recognizes only CRLF`(\r\n)` & LF`(\n)` as linebreak characters. So ensure that the either there is a linebreak character after the last variable. You can use `Serial.print("\n")` or `Serial.print("\r\n")` to introduce a linebreak character at the end. Conversely, `Serial.println()` introduces a CRLF character automatically. Further, you can also use `\t`(tab) or ` `(space) as a delimiter instead of `,`(comma) in the above example.***
+***The Serial Plotter recognizes only CRLF`(\r\n)` & LF`(\n)` as linebreak characters. So ensure that the either there is a linebreak character after the last variable. You can use `Serial.print("\n")` or `Serial.print("\r\n")` to introduce a linebreak character at the end. Conversely, `Serial.println()` introduces a CRLF character automatically. Further, you can also use `\t`(tab) or ` `(space) as a delimiter instead of `,`(comma) in the above example.  You can change the label the traces by prefixing the variables with a name and a colon like `name:` or `x:`.  If you leave out the labels, default labels will be generated.***
 
 ## The Serial Plotter