modify AndroidManifest.xml?

I need to integrate this package https://pub.dev/packages/health And

Health Connect requires the following lines in the AndroidManifest.xml file (also seen in the example app):

<queries>
    <package android:name="com.google.android.apps.healthdata" />
        <intent>
            <action android:name="androidx.health.ACTION_SHOW_PERMISSIONS_RATIONALE" />
        </intent>
</queries>

How can I modify AndroidManifest.xml?