quick fix removing excess character

diff --git a/docs/tutorial/mac-app-store-submission-guide.md b/docs/tutorial/mac-app-store-submission-guide.md
index fb04a55..1131859 100644 (file)
--- a/docs/tutorial/mac-app-store-submission-guide.md
+++ b/docs/tutorial/mac-app-store-submission-guide.md
@@ -1,26 +1,26 @@
 # Mac App Store Submission Guide
 
-Since v0.34.0, Electron allows submitting packaged apps to the Mac App Store 
-(MAS). This guide provides information on: how to submit your app and the 
+Since v0.34.0, Electron allows submitting packaged apps to the Mac App Store
+(MAS). This guide provides information on: how to submit your app and the
 limitations of the MAS build.
 
 ## How to Submit Your App
 
-The following steps introduce a simple way to submit your app to Mac App Store. 
-However, these steps do not ensure sure your app will be approved by Apple; you 
-still need to read Apple's [Submitting Your App][submitting-your-app] guide on 
+The following steps introduce a simple way to submit your app to Mac App Store.
+However, these steps do not ensure sure your app will be approved by Apple; you
+still need to read Apple's [Submitting Your App][submitting-your-app] guide on
 how to meet the Mac App Store requirements.
 
 ### Get Certificate
 
-To submit your app to the Mac App Store, you first must get a certificate from 
+To submit your app to the Mac App Store, you first must get a certificate from
 Apple. You can follow these [existing guides][nwjs-guide] on web.
 
 ### Sign Your App
 
 After getting the certificate from Apple, you can package your app by following
-[Application Distribution](application-distribution.md), and then proceed to 
-signing your app. This step is basically the same with other programs, but the 
+[Application Distribution](application-distribution.md), and then proceed to
+signing your app. This step is basically the same with other programs, but the
 key is to sign every dependency of Electron one by one.
 
 First, you need to prepare two entitlements files.
@@ -79,9 +79,9 @@ codesign --deep -fs "$APP_KEY" --entitlements child.plist "$FRAMEWORKS_PATH/$APP
 codesign  -fs "$APP_KEY" --entitlements parent.plist "$APP_PATH"
 productbuild --component "$APP_PATH" /Applications --sign "$INSTALLER_KEY" "$APP_PATH"
 ```
-a
+
 If you are new to app sandboxing under OS X, you should also read through 
-Apple's [Enabling App Sandbox][enable-app-sandbox] to have a basic idea, then 
+Apple's [Enabling App Sandbox][enable-app-sandbox] to have a basic idea, then
 add keys for the permissions needed by your app to the entitlements files.
 
 ### Upload Your App and Submit for Review
@@ -92,7 +92,7 @@ before uploading. Then you can [submit your app for review][submit-for-review].
 
 ## Limitations of MAS Build
 
-In order to satisfy all requirements for app sandboxing, the following modules 
+In order to satisfy all requirements for app sandboxing, the following modules
 have been disabled in the MAS build:
 
 * `crash-reporter`