docs: update "synk" -> "snyk" spelling

Update some old typos that say "synk" instead of "snyk".
out of sync. This should fix the top-level README.md to use the latest
snyk security scan badge -- as opposed to only referring to the last one
that used the misspelled file from about a month ago.

Signed-off-by: Blaine Gardner <blaine.gardner@ibm.com>

Documentation/Contributing/ci-configuration.md

@@ -7,7 +7,7 @@ This page contains information regarding the CI configuration used for the Rook
 ## Secrets
 
 * Snyk (Security Scan):
-    * `SNYK_TOKEN` - API Token for the [snyk security scanner](https://snyk.io/) (workflow file: `synk.yaml`).
+    * `SNYK_TOKEN` - API Token for the [snyk security scanner](https://snyk.io/) (workflow file: `snyk.yaml`).
 * Testing:
     * `IBM_INSTANCE_ID`: Used for KMS (Key Management System) IBM Key Protect access (see [`.github/workflows/encryption-pvc-kms-ibm-kp/action.yml`](https://github.com/rook/rook/blob/master/.github/workflows/encryption-pvc-kms-ibm-kp/action.yml)).
     * `IBM_SERVICE_API_KEY`: Used for KMS (Key Management System) IBM Key Protect access (see [`.github/workflows/encryption-pvc-kms-ibm-kp/action.yml`](https://github.com/rook/rook/blob/master/.github/workflows/encryption-pvc-kms-ibm-kp/action.yml)).

README.md

@@ -5,7 +5,7 @@
 [![Docker Pulls](https://img.shields.io/docker/pulls/rook/ceph)](https://hub.docker.com/u/rook)
 [![Go Report Card](https://goreportcard.com/badge/github.com/rook/rook)](https://goreportcard.com/report/github.com/rook/rook)
 [![CII Best Practices](https://bestpractices.coreinfrastructure.org/projects/1599/badge)](https://bestpractices.coreinfrastructure.org/projects/1599)
-[![Security scanning](https://github.com/rook/rook/actions/workflows/synk.yaml/badge.svg)](https://github.com/rook/rook/actions/workflows/synk.yaml)
+[![Security scanning](https://github.com/rook/rook/actions/workflows/snyk.yaml/badge.svg)](https://github.com/rook/rook/actions/workflows/snyk.yaml)
 [![Slack](https://img.shields.io/badge/rook-slack-blue)](https://slack.rook.io)
 [![Twitter Follow](https://img.shields.io/twitter/follow/rook_io.svg?style=social&label=Follow)](https://twitter.com/intent/follow?screen_name=rook_io&user_id=788180534543339520)