implementations may be *less* efficient than python standard libs (TheAlgorithms#854)

Author: hackerrdave

README.md

@@ -5,7 +5,7 @@
 
 ### All algorithms implemented in Python (for education)
 
-These implementations are for learning purposes. They may be efficient than the implementations in the Python standard library.
+These implementations are for learning purposes. They may be less efficient than the implementations in the Python standard library.
 
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