Fixed typos and bumped version (#4050)

Author: TahaTesser

packages/in_app_purchase/in_app_purchase_android/CHANGELOG.md

@@ -1,3 +1,7 @@
+## 0.1.4+1
+
+* Fixed typos.
+
 ## 0.1.4
 
 * Added support for launchPriceChangeConfirmationFlow in the BillingClientWrapper and in InAppPurchaseAndroidPlatformAddition.

packages/in_app_purchase/in_app_purchase_android/android/src/main/java/io/flutter/plugins/inapppurchase/MethodCallHandlerImpl.java

@@ -334,7 +334,7 @@ private void startConnection(
           @Override
           public void onBillingSetupFinished(BillingResult billingResult) {
             if (alreadyFinished) {
-              Log.d(TAG, "Tried to call onBilllingSetupFinished multiple times.");
+              Log.d(TAG, "Tried to call onBillingSetupFinished multiple times.");
               return;
             }
             alreadyFinished = true;

packages/in_app_purchase/in_app_purchase_android/pubspec.yaml

@@ -2,7 +2,7 @@ name: in_app_purchase_android
 description: An implementation for the Android platform of the Flutter `in_app_purchase` plugin. This uses the Android BillingClient APIs.
 repository: https://github.com/flutter/plugins/tree/master/packages/in_app_purchase/in_app_purchase_android
 issue_tracker: https://github.com/flutter/flutter/issues?q=is%3Aissue+is%3Aopen+label%3A%22p%3A+in_app_purchase%22
-version: 0.1.4
+version: 0.1.4+1
 
 environment:
   sdk: ">=2.12.0 <3.0.0"