docs: LEAP-615: Mention spaces saving for Text tag (#5371)

* [submodules] Copy src HumanSignal/label-studio-frontend

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* ci: Build frontend

Workflow run: https://github.com/HumanSignal/label-studio/actions/runs/7675093678

* [submodules] Copy src HumanSignal/label-studio-frontend

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* ci: Build frontend

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* [submodules] Copy src HumanSignal/label-studio-frontend

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* docs: LSF Update

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* ci: Build frontend

Workflow run: https://github.com/HumanSignal/label-studio/actions/runs/7913745674

* [submodules] Copy src HumanSignal/label-studio-frontend

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Co-authored-by: hlomzik <hlomzik@gmail.com>
Co-authored-by: robot-ci-heartex <robot-ci-heartex@users.noreply.github.com>
Co-authored-by: Caitlin Wheeless <caitlin.wheeless@gmail.com>
Co-authored-by: hlomzik <hlomzik@users.noreply.github.com>