docs: fix grammar

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

Author: kgryte

lib/node_modules/@stdlib/blas/ext/base/gapxsum/docs/repl.txt

@@ -6,7 +6,7 @@
     are accessed at runtime.
 
     Indexing is relative to the first index. To introduce an offset, use typed
-    array view.
+    array views.
 
     If `N <= 0`, the function returns `0.0`.