Remove new line from multi-line string in YAML

To explicitly remove a new line at the end of your string, use a |- after your key definition:

---
multiline_text: |-
  Let me tell you a story...
  
  About my multi-line string.
  
other_key: "I'm another key"

This would output a string like so for multiline_text:

Let me tell you a story...\nAbout my multi-line string.

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