Fix another batch of spelling typos (#13915)

* Fix typos

* Remove repeated words

* Minor grammar fixes

samples/server/petstore/java-micronaut-server/docs/controllers/StoreController.md

@@ -61,7 +61,7 @@ Mono<Order> StoreController.getOrderById(orderId)
 
 Find purchase order by ID
 
-For valid response try integer IDs with value &lt;&#x3D; 5 or &gt; 10. Other values will generated exceptions
+For valid response try integer IDs with value &lt;&#x3D; 5 or &gt; 10. Other values will generate exceptions
 
 ### Parameters
 Name | Type | Description  | Notes

samples/server/petstore/java-micronaut-server/src/main/java/org/openapitools/controller/StoreController.java

@@ -94,7 +94,7 @@ public class StoreController {
 
     /**
      * Find purchase order by ID
-     * For valid response try integer IDs with value <= 5 or > 10. Other values will generated exceptions
+     * For valid response try integer IDs with value <= 5 or > 10. Other values will generate exceptions
      *
      * @param orderId ID of pet that needs to be fetched (required)
      * @return Order

samples/server/petstore/java-micronaut-server/src/test/groovy/org/openapitools/controller/StoreControllerSpec.groovy

@@ -127,7 +127,7 @@ class StoreControllerSpec extends Specification {
      *
      * The method should: Find purchase order by ID
      *
-     * For valid response try integer IDs with value <= 5 or > 10. Other values will generated exceptions
+     * For valid response try integer IDs with value <= 5 or > 10. Other values will generate exceptions
      *
      * TODO fill in the parameters and test return value.
      */