Update fill value to KEPPEL_GREEN_FILL

Signed-off-by: DANIEL KATOTO <katotodan@gmail.com>

Author: Katotodan

src/icons/People/PeopleIcon.tsx

@@ -1,10 +1,10 @@
-import { DEFAULT_FILL, DEFAULT_HEIGHT, DEFAULT_WIDTH } from '../../constants/constants';
+import { KEPPEL_GREEN_FILL , DEFAULT_HEIGHT, DEFAULT_WIDTH } from '../../constants/constants';
 import { IconProps } from '../types';
 
 const PeopleIcon = ({
   width = DEFAULT_WIDTH,
   height = DEFAULT_HEIGHT,
-  fill = DEFAULT_FILL,
+  fill = KEPPEL_GREEN_FILL ,
   ...props
 }: IconProps): JSX.Element => (
   <svg