Fix spelling mistakes

(cherry picked from commit d325043)

Author: deliahu

docs/cluster/config.md

@@ -7,7 +7,7 @@ The Cortex cluster may be configured by providing a configuration file to `corte
 ```yaml
 # cluster.yaml
 
-# AWS credentials (if not specified, ~/.aws/credentials will be checked) (can be overriden by $AWS_ACCESS_KEY_ID and $AWS_SECRET_ACCESS_KEY)
+# AWS credentials (if not specified, ~/.aws/credentials will be checked) (can be overridden by $AWS_ACCESS_KEY_ID and $AWS_SECRET_ACCESS_KEY)
 aws_access_key_id: ***
 aws_secret_access_key: ***
 

docs/deployments/predictor.md

@@ -127,7 +127,7 @@ def predict(sample, metadata):
 
 The following packages have been pre-installed and can be used in your implementations:
 
-```
+```text
 Keras==2.3.1
 Pillow==6.2.1
 cloudpickle==1.2.2

docs/packaging/tensorflow.md

@@ -8,7 +8,7 @@ import tensorflow as tf
 
 ...
 
-OUPUT_DIR="bert"
+OUTPUT_DIR="bert"
 estimator = tf.estimator.Estimator(model_fn=model_fn...)
 
 # TF Serving requires a special input_fn used at serving time
@@ -22,7 +22,7 @@ def serving_input_fn():
     }
     return tf.estimator.export.ServingInputReceiver(features=features, receiver_tensors=inputs)
 
-estimator.export_savedmodel(OUPUT_DIR, serving_input_fn, strip_default_attrs=True)
+estimator.export_savedmodel(OUTPUT_DIR, serving_input_fn, strip_default_attrs=True)
 ```
 
 Upload the checkpoint directory to Amazon S3 using the AWS web console or CLI: