Fix auto-threading not working when content aware naming is on and th…

…e message posted is just an image.

This was because when we take the first 75 characters of the content aware name, it makes the string no longer null and just an empty string, so the check to see if the string was null (empty) was being bypassed. Simple fix as show in the commit

docs/commands.md

@@ -37,7 +37,7 @@ None
 * **Arguments**:
 	* `channel` - The channel to view the auto-threading settings for. - Channel
 
-Hopefull---
+---
 ### Command name: `clear count`
 **Description**: Clear a specific count of messages
 

src/main/kotlin/org/hyacinthbots/lilybot/extensions/events/AutoThreading.kt

@@ -505,7 +505,7 @@ class AutoThreading : Extension() {
 
 		var threadName: String? = event.message.content.trim().split("\n").firstOrNull()?.take(75)
 
-		if (!options.contentAwareNaming || threadName == null) {
+		if (!options.contentAwareNaming || threadName.isNullOrEmpty()) {
 			threadName = "Thread for ${
 				message?.author?.asUser()?.username ?: proxiedMessage?.member?.name
 			}".take(75)