fix small typos

design/apidsl/attribute.go

@@ -366,7 +366,7 @@ func Enum(val ...interface{}) {
 			// such as responses that refer to responses defined at the API level or links that
 			// refer to the media type attributes. So if the form that takes a DSL always ended
 			// up defining an object we'd have a weird situation where one arg is string and
-			// two args is object. Breaks the least surprise principle. Soooo long story
+			// two args is object. Breaks the least surprise principle. So long story
 			// short the lesser evil seems to be to allow the ambiguity. Also tests like the
 			// one below are really a convenience to the user and not a fundamental feature
 			// - not checking in the case the type is not known yet is OK.

design/apidsl/resource.go

@@ -35,7 +35,7 @@ import (
 //			Headers("X-Shared-Secret")           // One or more authorized headers, use "*" to authorize all
 //			Methods("GET", "POST")               // One or more authorized HTTP methods
 //			Expose("X-Time")                     // One or more headers exposed to clients
-//			MaxAge(600)                          // How long to cache a prefligh request response
+//			MaxAge(600)                          // How long to cache a preflight request response
 //			Credentials()                        // Sets Access-Control-Allow-Credentials header
 //		})
 //

design/definitions.go

@@ -158,7 +158,7 @@ type (
 		Methods []string
 		// List of headers exposed to clients
 		Exposed []string
-		// How long to cache a prefligh request response
+		// How long to cache a preflight request response
 		MaxAge uint
 		// Sets Access-Control-Allow-Credentials header
 		Credentials bool
@@ -176,7 +176,7 @@ type (
 		// the goa.EncoderFactory or goa.DecoderFactory interface respectively.
 		PackagePath string
 		// Function is the name of the Go function used to instantiate the encoder/decoder.
-		// Defaults to NewEncoder and NewDecoder respecitively.
+		// Defaults to NewEncoder and NewDecoder respectively.
 		Function string
 		// Encoder is true if the definition is for a encoder, false if it's for a decoder.
 		Encoder bool