docs: document support for normalize index mode

Author: kgryte

Diff for: lib/node_modules/@stdlib/ndarray/array/README.md

@@ -114,6 +114,7 @@ The function accepts the following `options`:
 -   **mode**: specifies how to handle indices which exceed array dimensions.
 
     -   `throw`: specifies that an [`ndarray`][@stdlib/ndarray/ctor] instance should throw an error when an index exceeds array dimensions.
+    -   `normalize`: specifies that an [`ndarray`][@stdlib/ndarray/ctor] instance should normalize negative indices and throw an error when an index exceeds array dimensions.
     -   `wrap`: specifies that an [`ndarray`][@stdlib/ndarray/ctor] instance should wrap around an index exceeding array dimensions using modulo arithmetic.
     -   `clamp`: specifies that an [`ndarray`][@stdlib/ndarray/ctor] instance should set an index exceeding array dimensions to either `0` (minimum index) or the maximum index.
 

Diff for: lib/node_modules/@stdlib/ndarray/array/docs/repl.txt

@@ -101,6 +101,8 @@
 
         - 'throw': an ndarray instance throws an error when an index exceeds
           array dimensions.
+        - 'normalize': an ndarray instance normalizes negative indices and
+          throws an error when an index exceeds array dimensions.
         - 'wrap': an ndarray instance wraps around indices exceeding array
           dimensions using modulo arithmetic.
         - 'clamp', an ndarray instance sets an index exceeding array dimensions
@@ -114,6 +116,8 @@
 
         - 'throw': an ndarray instance throws an error when a subscript exceeds
           array dimensions.
+        - 'normalize': an ndarray instance normalizes negative subscripts and
+          throws an error when a subscript exceeds array dimensions.
         - 'wrap': an ndarray instance wraps around subscripts exceeding array
           dimensions using modulo arithmetic.
         - 'clamp': an ndarray instance sets a subscript exceeding array