Fix another batch of spelling typos (#13915)

* Fix typos

* Remove repeated words

* Minor grammar fixes

samples/server/petstore/kotlin-springboot-source-swagger1/src/main/kotlin/org/openapitools/api/StoreApiController.kt

@@ -74,7 +74,7 @@ class StoreApiController(@Autowired(required = true) val service: StoreApiServic
     @ApiOperation(
         value = "Find purchase order by ID",
         nickname = "getOrderById",
-        notes = "For valid response try integer IDs with value <= 5 or > 10. Other values will generated exceptions",
+        notes = "For valid response try integer IDs with value <= 5 or > 10. Other values will generate exceptions",
         response = Order::class)
     @ApiResponses(
         value = [ApiResponse(code = 200, message = "successful operation", response = Order::class),ApiResponse(code = 400, message = "Invalid ID supplied"),ApiResponse(code = 404, message = "Order not found")])

samples/server/petstore/kotlin-springboot-source-swagger1/src/main/kotlin/org/openapitools/api/StoreApiService.kt

@@ -26,7 +26,7 @@ interface StoreApiService {
 
     /**
      * GET /store/order/{orderId} : 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 successful operation (status code 200)

samples/server/petstore/kotlin-springboot-source-swagger1/src/main/resources/openapi.yaml

@@ -341,7 +341,7 @@ paths:
       - store
     get:
       description: For valid response try integer IDs with value <= 5 or > 10. Other
-        values will generated exceptions
+        values will generate exceptions
       operationId: getOrderById
       parameters:
       - description: ID of pet that needs to be fetched