cpp : Typo fixes

cpp/ViolaJones.cpp

@@ -254,7 +254,7 @@ std::tuple<int32_t, float64_t, np::Array<float64_t>> select_best(const np::Array
 }
 
 /**
- * @brief Train the weak calssifiers.
+ * @brief Train the weak classifiers.
  *
  * @param T Number of weak classifiers
  * @param X_feat Integrated features

cpp/toolbox.hpp

@@ -99,7 +99,7 @@ std::string format_byte_size(uint64_t) noexcept;
  * @brief Format a number with a separator (i.e. 1000 as 1,000)
  *
  * @param k number to format
- * @param separator used between each thouand
+ * @param separator used between each thousand
  * @return Formatted number
  */
 std::string thousand_sep(uint64_t, const char& = ',') noexcept;