refer to the VarDumper component for dump()
feature #4446 [Book][Templating] refer to the VarDumper component for dump() (xabbuh)

This PR was merged into the 2.6 branch.

Discussion
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[Book][Templating] refer to the VarDumper component for dump()

| Q             | A
| ------------- | ---
| Doc fix?      | no
| New docs?     | no
| Applies to    | 2.6+
| Fixed tickets |

Commits
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c1eb0c5 refer to the VarDumper component for dump()