fix: unit for "kilo" is lowercase (kubernetes#6314)

Author: tomplus

docs/concepts/configuration/manage-compute-resources-container.md

@@ -70,7 +70,7 @@ CPU is always requested as an absolute quantity, never as a relative quantity;
 
 Limits and requests for `memory` are measured in bytes. You can express memory as
 a plain integer or as a fixed-point integer using one of these suffixes:
-E, P, T, G, M, K. You can also use the power-of-two equivalents: Ei, Pi, Ti, Gi,
+E, P, T, G, M, k. You can also use the power-of-two equivalents: Ei, Pi, Ti, Gi,
 Mi, Ki. For example, the following represent roughly the same value:
 
 ```shell