docs(cookbook): fix two typos in the executor part (#2494)

.github/2.0/cookbooks/Executor.md

@@ -548,7 +548,7 @@ by [fastai](https://github.com/fastai/fastai).
 
 The `encode` function of this executor generates a feature vector for each image in each `Document` of the
 input `DocumentArray`. The feature vector generated is the output activations of the neural network (a vector of 1000
-components). Note the embedding of each text is perfomed in a joined operation (all embeddings are creted for all images
+components). Note the embedding of each text is performed in a joined operation (all embeddings are created for all images
 in a single function call) to achieve higher performance.
 
 As a result each `Document` in the input `DocumentArray`  _docs_ will have an `embedding` after `encode()` has