Updating software components to latest stable releases. Fix missing config, minor spelling/grammar/flow fixes.

The main purpose of this update is to make sure the guide still works with the newest version of all software. In running through the guide I found places to make bug fixes and minor improvements.

configs/encryption-config.yaml

@@ -0,0 +1,11 @@
+kind: EncryptionConfig
+apiVersion: v1
+resources:
+  - resources:
+      - secrets
+    providers:
+      - aescbc:
+          keys:
+            - name: key1
+              secret: ${ENCRYPTION_KEY}
+      - identity: {}