docs($http): fix adding default header to get request example

Initially, `$httpProvider.defaults.headers.get` is `undefined`, so
`$httpProvider.defaults.headers.get['My-Header']='value'` will throw an
error.

Closes #4101

1 files changed, 1 insertions, 1 deletions

diff --git a/src/ng/http.js b/src/ng/http.js
index c958f414..3b2ac8d6 100644
--- a/src/ng/http.js
+++ b/src/ng/http.js
@@ -286,7 +286,7 @@ function $HttpProvider() {
      * To add or overwrite these defaults, simply add or remove a property from these configuration
      * objects. To add headers for an HTTP method other than POST or PUT, simply add a new object
      * with the lowercased HTTP method name as the key, e.g.
-     * `$httpProvider.defaults.headers.get['My-Header']='value'`.
+     * `$httpProvider.defaults.headers.get = { 'My-Header' : 'value' }.
      *
      * Additionally, the defaults can be set at runtime via the `$http.defaults` object in the same
      * fashion.