Correct spelling mistakes

ci/common

@@ -33,7 +33,7 @@ if [ -z ${KUBEVAL_VERSION:-} ]; then
 fi
 
 ## Valid versions to list under LINT_KUBE_VERSIONS are those in the
-## kubernetes-json-schema repoistory, used by kubeval.
+## kubernetes-json-schema repository, used by kubeval.
 ##
 ## ref: https://github.com/instrumenta/kubernetes-json-schema
 ##

ci/publish

@@ -2,8 +2,8 @@
 set -eu
 
 # Decrypt a private SSH key having its public key registered on GitHub. It will
-# be used to establish an identity with rights to push to the repo hosting our
-# Helm charts: https://github.com/jupyterhub/helm-chart
+# be used to establish an identity with rights to push to the git repository
+# hosting our Helm charts: https://github.com/jupyterhub/helm-chart
 openssl aes-256-cbc -K $encrypted_c6b45058ffe8_key -iv $encrypted_c6b45058ffe8_iv -in ci/publish-id_rsa.enc -out ci/id_rsa -d
 chmod 0400 ci/id_rsa
 

ci/start-k8s

@@ -56,7 +56,7 @@ CALICO_ETCD_IP=$(kubectl get service -n kube-system calico-etcd -o jsonpath='{.s
 CALICO_ETCD_PORT=$(kubectl get service -n kube-system calico-etcd -o jsonpath='{.spec.ports[0].port}')
 sed -i -e "s/<ETCD_IP>:<ETCD_PORT>/$CALICO_ETCD_IP:$CALICO_ETCD_PORT/" ci/daemonset-calico-node.yaml
 kubectl apply -f ci/daemonset-calico-node.yaml
-# NOTE: daemonset/calico-node pods' main container fails to startup without
+# NOTE: daemonset/calico-node pods' main container fails to start up without
 #       an additional environment variable configured to disable a check
 #       that we fail.
 #

ci/travis-docker-fix

@@ -1,9 +1,9 @@
 #!/bin/bash
 set -eu
 
-# This is a workaround to an issue caused by the existance of a docker registry
+# This is a workaround to an issue caused by the existence of a docker registry
 # mirror in our CI environment. Without this fix that removes the mirror,
-# chartpress fails to realize the existance of already built images and rebuilds
+# chartpress fails to realize the existence of already built images and rebuilds
 # them.
 #
 # ref: https://github.com/moby/moby/issues/39120