Update locatefile documentation

Author: moshen

README.md

@@ -79,16 +79,12 @@ tests](src/test/integration/index.ts).
 #### `WASMagicOptions`
 
 ```typescript
-type ModuleOptions = {
-  locateFile?: (path: string, prefix: string) => string;
-};
-
 type WASMagicOptions = {
   flags?: WASMagicFlags;
   loadDefaultMagicfile?: boolean;
   magicFiles?: Uint8Array[];
   stdio?: (stdioName: "stdout" | "stderr", text: string) => void;
-  moduleOptions?: ModuleOptions;
+  locateFile?: (path: string, prefix: string) => string;
 };
 ```
 
@@ -183,12 +179,7 @@ development of this module.
 **Default**: `(_stdioName: "stdout" | "stderr", _text: string) => {}` (No
 output)
 
-##### `moduleOptions`
-
-`moduleOptions` is an optional object that allows you to pass configuration
-options directly to the underlying Emscripten WASM module.
-
-###### `moduleOptions.locateFile`
+###### `locateFile`
 
 `locateFile` is a `function` that allows you to customize how the WASM module
 locates the `libmagic-wrapper.wasm` file. This is particularly useful when
@@ -207,13 +198,11 @@ Example using a custom path:
 import { WASMagic } from "wasmagic";
 
 const magic = await WASMagic.create({
-  moduleOptions: {
-    locateFile: (path, prefix) => {
-      if (path.endsWith(".wasm")) {
-        return `/custom/path/to/${path}`;
-      }
-      return prefix + path;
-    },
+  locateFile: (path, prefix) => {
+    if (path.endsWith(".wasm")) {
+      return `/custom/path/to/${path}`;
+    }
+    return prefix + path;
   },
 });
 ```