Fix javadoc error in FriendlyByteBuffer

For some reason that stopped the entire GitHub actions build https://github.com/JorelAli/CommandAPI/actions/runs/5617486381/job/15221661407#step:4:1439
Whoops

commandapi-core/src/main/java/dev/jorel/commandapi/network/FriendlyByteBuffer.java

@@ -436,7 +436,7 @@ public void writeString(String string) {
 	}
 
 	/**
-	 * Reads a String from this buffer. This method assumes the String was written by {@link #writeString(String).}
+	 * Reads a String from this buffer. This method assumes the String was written by {@link #writeString(String)}.
 	 *
 	 * @return The String read from this buffer.
 	 * @throws IllegalStateException If the read index goes out of bounds while reading bytes.