re-generate markdown files

100_Numpy_exercises_with_hints_with_solutions.md

@@ -38,6 +38,9 @@ print(Z)
 ```python
 Z = np.zeros((10,10))
 print("%d bytes" % (Z.size * Z.itemsize))
+
+# Simpler alternative
+print("%d bytes" % Z.nbytes)
 ```
 #### 5. How to get the documentation of the numpy add function from the command line? (★☆☆)
 `hint: np.info`

100_Numpy_exercises_with_solutions.md

@@ -38,6 +38,9 @@ print(Z)
 ```python
 Z = np.zeros((10,10))
 print("%d bytes" % (Z.size * Z.itemsize))
+
+# Simpler alternative
+print("%d bytes" % Z.nbytes)
 ```
 #### 5. How to get the documentation of the numpy add function from the command line? (★☆☆)