docs: fix grammar

Author: kgryte

lib/node_modules/@stdlib/napi/argv-strided-uint32array2d/README.md

@@ -149,7 +149,7 @@ The function accepts the following arguments:
 -   **strideX2**: `[in] int64_t` stride length along the second dimension.
 -   **value**: `[in] napi_value` Node-API value.
 -   **data**: `[out] uint32_t**` pointer for returning a reference to the output array.
--   **message1**: `[in] char*` error message if a value is not an `Uint32Array`.
+-   **message1**: `[in] char*` error message if a value is not a `Uint32Array`.
 -   **message2**: `[in] char*` error message if a value has insufficient elements.
 -   **err**: `[out] napi_value*` pointer for storing a JavaScript error. If not provided a number, the function sets `err` with a JavaScript error; otherwise, `err` is set to `NULL`.