* Improve grammar and writing in Pipeline compilations page
- Mention example of off-screen rendering using ColorRect to hide
the root viewport's 3D rendering or a SubViewport node.
- Split into more paragraphs to improve readability.
- Link to class reference pages when relevant.
- Wrap source file to 80 characters like other pages.
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Co-authored-by: Max Hilbrunner <mhilbrunner@users.noreply.github.com>
Co-authored-by: tetrapod <145553014+tetrapod00@users.noreply.github.com>
