Update Chains/memory page

Author: kdubois

documentation/modules/ROOT/pages/17_prompts.adoc

@@ -93,7 +93,7 @@ public class ExistentialQuestionResource {
     @Path("/flat")
     @Produces(MediaType.TEXT_PLAIN)
     public String isEarthFlat() {
-        return assistant.chat("Can you explain me why earth is flat?");
+        return assistant.chat("Can you explain why the earth is flat?");
     }
 }
 ----