Fix typo, and trimming.

docs/api/protocol.md

@@ -286,7 +286,6 @@ which sends a new HTTP request as a response.
 * `completion` Function (optional)
   * `error` Error
 
-
 Remove the interceptor installed for `scheme` and restore its original handler.
 
 [net-error]: https://code.google.com/p/chromium/codesearch#chromium/src/net/base/net_error_list.h

docs/api/session.md

@@ -549,9 +549,9 @@ The following methods are available on instances of `WebRequest`:
 The `listener` will be called with `listener(details, callback)` when a request
 is about to occur.
 
-The `uploadData` is an array of `UploadData` objects:
+The `uploadData` is an array of `UploadData` objects.
 
-The `callback` has to be called with an `response` object:
+The `callback` has to be called with an `response` object.
 
 #### `webRequest.onBeforeSendHeaders([filter, ]listener)`
 
@@ -575,7 +575,7 @@ TCP connection is made to the server, but before any http data is sent.
     * `requestHeaders` Object (optional) - When provided, request will be made
       with these headers.
 
-The `callback` has to be called with an `response` object:
+The `callback` has to be called with an `response` object.
 
 #### `webRequest.onSendHeaders([filter, ]listener)`
 

docs/api/structures/desktop-capturer-source.md

@@ -9,6 +9,6 @@
   title.
 * `thumbnail` [NativeImage](../native-image.md) - A thumbnail image. **Note:**
   There is no guarantee that the size of the thumbnail is the same as the
-  `thumnbailSize` specified in the `options` passed to
+  `thumbnailSize` specified in the `options` passed to
   `desktopCapturer.getSources`. The actual size depends on the scale of the
   screen or window.