docs: fix data type

Author: kgryte

lib/node_modules/@stdlib/napi/argv-complex128/README.md

@@ -135,7 +135,7 @@ The function accepts the following arguments:
 
 -   **env**: `[in] napi_env` environment under which the function is invoked.
 -   **value**: `[in] napi_value` Node-API value.
--   **out**: `[out] stdlib_complex_128_t*` destination for storing output value.
+-   **out**: `[out] stdlib_complex128_t*` destination for storing output value.
 -   **message**: `[in] char*` error message.
 -   **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`.