refactor: change the c- prefix to cq- for container queries

Author: mrholek

docs/assets/scss/_component-examples.scss

@@ -146,8 +146,8 @@
 
 .docs-example-row [class^="col"],
 .docs-example-cols [class^="col"] > *,
-.docs-example-row [class^="c-col"],
-.docs-example-cols [class^="c-col"] > *,
+.docs-example-row [class^="cq-col"],
+.docs-example-cols [class^="cq-col"] > *,
 .docs-example-cssgrid [class*="grid"] > * {
   padding-top: .75rem;
   padding-bottom: .75rem;