Fix hint in question 53 .ipynb & .md files

100_Numpy_exercises_with_hint.ipynb

@@ -866,7 +866,7 @@
    "metadata": {},
    "source": [
     "#### 53. How to convert a float (32 bits) array into an integer (32 bits) in place? \n",
-    "(**hint**: astype(copy=False))"
+    "(**hint**: view and [:] = )"
    ]
   },
   {
@@ -1611,7 +1611,7 @@
    "name": "python",
    "nbconvert_exporter": "python",
    "pygments_lexer": "ipython3",
-   "version": "3.6.4"
+   "version": "3.7.6"
   }
  },
  "nbformat": 4,

100_Numpy_exercises_with_hint.md

@@ -351,7 +351,7 @@ np.sqrt(-1) == np.emath.sqrt(-1)
 
 #### 53. How to convert a float (32 bits) array into an integer (32 bits) in place? 
 
-(**hint**: astype(copy=False))
+(**hint**: view and [:] = )