[docs] minor cleanups in the lora docs. (#11770)
* minor cleanups in the lora docs.
* Apply suggestions from code review
Co-authored-by: Steven Liu <59462357+stevhliu@users.noreply.github.com>
* format docs
* fix copies
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Co-authored-by: Steven Liu <59462357+stevhliu@users.noreply.github.com>
