chore: update keywords

Signed-off-by: Athan <[email protected]>

Author: kgryte

lib/node_modules/@stdlib/stats/array/mean/package.json

@@ -60,8 +60,6 @@
     "mean",
     "arithmetic mean",
     "central tendency",
-    "domain",
-    "extent",
     "array"
   ],
   "__stdlib__": {}