Shortcode: Add nobreak shortcode and usage example

Author: nginx-jack

exampleSite/content/test-product/prose/_index.md

@@ -0,0 +1,5 @@
+---
+description: Prose
+title: Prose
+weight: 100
+---

exampleSite/content/test-product/prose/nobreak.md

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+---
+description: Nobreak
+title: Nobreak
+weight: 100
+---
+
+## No break shortcode `nobreak`
+
+Using the `nobreak` shorcode should stop words breaking across lines. A common use case would be on things like product names, such as {{<nobreak>}}NGINX Plus (nobreak) {{</nobreak>}} vs NGINX Plus (with break).
+
+Usage
+
+``` markdown
+{{</*nobreak*/>}}NGINX Plus{{</*/nobreak*/>}}
+```

layouts/shortcodes/nobreak.html

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+<span style="white-space: nowrap;">{{ .Inner | markdownify }}</span>