keycloak-theme/keycloak-themes/base/admin/resources/partials/realm-identity-provider-github-ext.html

<div class="form-group clearfix block">
    <label class="col-md-2 control-label" for="baseUrl">{{:: 'identity-provider.base-url' | translate}}</label>
    <div class="col-md-6">
        <input class="form-control" id="baseUrl" type="text" ng-model="identityProvider.config.baseUrl">
    </div>
    <kc-tooltip>{{:: 'identity-provider.base-url.tooltip' | translate}}</kc-tooltip>
</div>
<div class="form-group clearfix block">
    <label class="col-md-2 control-label" for="apiUrl">{{:: 'identity-provider.api-url' | translate}}</label>
    <div class="col-md-6">
        <input class="form-control" id="apiUrl" type="text" ng-model="identityProvider.config.apiUrl">
    </div>
    <kc-tooltip>{{:: 'identity-provider.api-url.tooltip' | translate}}</kc-tooltip>
</div>