📝 Fixed README.md

Missing type from copy-paste: 'telegraph' => 'oEmbed'

Author: toby3d

README.md

@@ -1,7 +1,7 @@
 # oEmbed
 oEmbed is a format for allowing an embedded representation of a URL on third party sites. The simple API allows a website to display embedded content (such as photos or videos) when a user posts a link to that resource, without having to parse the resource directly.
 
-## Start using telegraph
+## Start using oEmbed
 Download and install it:  
 `$ go get -u gitlab.com/toby3d/oembed`