Fix several typos and grammar errors

docs/api/browser-window.md

@@ -753,7 +753,7 @@ Calling `event.preventDefault()` can prevent creating new windows.
 Emitted when user or the page wants to start an navigation, it can happen when
 `window.location` object is changed or user clicks a link in the page.
 
-This event will not emit when the navigation is started programmely with APIs
+This event will not emit when the navigation is started programmatically with APIs
 like `WebContents.loadUrl` and `WebContents.back`.
 
 Calling `event.preventDefault()` can prevent the navigation.

docs/api/frameless-window.md

@@ -28,7 +28,7 @@ var win = new BrowserWindow({ transparent: true, frame: false });
   API to set window shape to solve this, but currently blocked at an
   [upstream bug](https://code.google.com/p/chromium/issues/detail?id=387234).
 * Transparent window is not resizable, setting `resizable` to `true` may make
-  transprent window stop working on some platforms.
+  transparent window stop working on some platforms.
 * The `blur` filter only applies to the web page, so there is no way to apply
   blur effect to the content below the window.
 * On Windows transparent window will not work when DWM is disabled.

docs/api/global-shortcut.md

@@ -10,7 +10,7 @@ var globalShortcut = require('global-shortcut');
 // Register a 'ctrl+x' shortcut listener.
 var ret = globalShortcut.register('ctrl+x', function() { console.log('ctrl+x is pressed'); })
 if (!ret)
-  console.log('registerion fails');
+  console.log('registration failed');
 
 // Check whether a shortcut is registered.
 console.log(globalShortcut.isRegistered('ctrl+x'));