Fix example in godoc (#1480)

Signed-off-by: Thomas Poignant <[email protected]>

package_info.go

@@ -10,30 +10,36 @@
 // The ffclient package provides the entry point - initialization and the basic
 // method to get your flags value.
 //
-// Before using the module you need to initialized it this way:
-//
-//	func main() {
-//	  err := ffclient.Init(ffclient.Config{
-//	           PollingInterval: 3 * time.Second,
-//	           HTTPRetriever: &httpretriever.Retriever{
-//	             URL:    "http://example.com/flag-config.yaml",
-//	           },
-//	         })
-//	  defer ffclient.Close()
-//	  ...
+// Before using the module you need to initialize it this way:
+//
+//	 import (
+//		  ffclient "github.com/thomaspoignant/go-feature-flag"
+//		  "github.com/thomaspoignant/go-feature-flag/retriever/httpretriever"
+//		  ...
+//	 )
+//
+//	 func main() {
+//		  err := ffclient.Init(ffclient.Config{
+//		      PollingInterval: 3 * time.Second,
+//		      Retriever: &httpretriever.Retriever{
+//		          URL:  "https://code.gofeatureflag.org/blob/main/testdata/flag-config.yaml",
+//		      },
+//		  })
+//		  defer ffclient.Close()
+//		  ...
 //
 // This example will load a file from an HTTP endpoint and will refresh the flags every 3 seconds.
 //
 // Now you can evaluate your flags anywhere in your code.
 //
-//	func main() {
-//	  ...
-//	  user := ffcontext.NewEvaluationContext("user-unique-key")
-//	  hasFlag, _ := ffclient.BoolVariation("test-flag", user, false)
-//	  if hasFlag {
-//	    //flag "test-flag" is true for the user
-//	  } else {
-//	    // flag "test-flag" is false for the user
+//			  ...
+//			  evaluationContext := ffcontext.NewEvaluationContext("user-unique-key")
+//			  hasFlag, _ := ffclient.BoolVariation("test-flag", evaluationContext, false)
+//			  if hasFlag {
+//			      //flag "test-flag" is true for the user
+//			  } else {
+//			     // flag "test-flag" is false for the user
+//			  }
+//			  ...
 //	  }
-//	  ...
 package ffclient