Update Print Keyword

Print-Keyword.md

@@ -21,7 +21,7 @@ Keyword: `println` (or `stdlnout`)
 
 Syntax: `println $str`
 
-Time Complexity:
+Time Complexity: O(n), where n is the amount of characters being printed.
 
 ## Overview
 The `println` keyword appends its argument to stdout, then flushes the buffer.