Fix small typo in receiver.md (#6387)

Author: jprescott1

content/en/docs/collector/building/receiver.md

@@ -350,7 +350,7 @@ touch tailtracer/factory.go
 ```
 
 Now let's follow the convention and add a function named `NewFactory()` that
-will be responsible to instantiate the `tailtracer` factory. Go ahead the add
+will be responsible to instantiate the `tailtracer` factory. Go ahead and add
 the following code to your `factory.go` file:
 
 ```go