fixed type

Main.cpp

@@ -5,7 +5,7 @@
 // All implementations in this class use ints insteads of size_t because size_t
 // is interely slow compared to ints. C++20 also adds new methods to call for
 // signed container sizes. Several online resources also suggest to use unsigned
-// types mostly for bit operations and nothign else.
+// types mostly for bit operations and nothing else.
 
 // This struct is used in the automated tests at the end of the file.
 // It counts all instances with different numbers to ensure each object is