Update programming.rst

Author: hyperkai

Doc/faq/programming.rst

@@ -1176,7 +1176,7 @@ is a list, it makes a copy just like ``seq[:]`` would.
 What's a negative index?
 ------------------------
 
-Python sequences are indexed with signed numbers (0, positive numbers and negative numbers). For example, 0 is the 1st index and for positive indices, 1 is the 2nd index, 2 is the 3rd index and so forth. For
+Python sequences are indexed with signed numbers (zero, positive numbers and negative numbers). For example, 0 is the 1st index and for positive indices, 1 is the 2nd index, 2 is the 3rd index and so forth. For
 negative indices, -1 is the last index, -2 is the penultimate (next to last)
 index and so forth. Think of ``seq[-n]`` as the same as ``seq[len(seq)-n]``.