Correct a spelling mistake.

Author: EdwardBetts

code/array_list.py

@@ -55,7 +55,7 @@ def __init__(self, data=None, sizes=None, dtype=float, sizeable=True, writeable=
             an error is raised.
 
             If `itemsize` is 1-D array, the array will be divided into
-            elements whose succesive sizes will be picked from itemsize.
+            elements whose successive sizes will be picked from itemsize.
             If the sum of itemsize values is different from array size,
             an error is raised.
 
@@ -298,7 +298,7 @@ def insert(self, index, data, sizes=None):
             an error is raised.
 
             If `itemsize` is 1-D array, the array will be divided into
-            elements whose succesive sizes will be picked from itemsize.
+            elements whose successive sizes will be picked from itemsize.
             If the sum of itemsize values is different from array size,
             an error is raised.
         """
@@ -404,7 +404,7 @@ def append(self, data, sizes=None):
             an error is raised.
 
             If `itemsize` is 1-D array, the array will be divided into
-            elements whose succesive sizes will be picked from itemsize.
+            elements whose successive sizes will be picked from itemsize.
             If the sum of itemsize values is different from array size,
             an error is raised.
         """