Update terminology.rst (#156)

Correct kernel map for Kernel I. 
 - According to the animation the input with index 0 maps also to output with index 0 in kernel I.

Author: daniel-scholz

docs/terminology.rst

@@ -77,7 +77,7 @@ In this example, we require 9 kernel maps for all :math:`3\times 3` kernel. Howe
 - Kernel B: 1 → 0
 - Kernel B: 0 → 2
 - Kernel H: 2 → 3
-- Kernel I: 0 → 2
+- Kernel I: 0 → 0