Soy: ParamMigrator: remove empty lines in SoyDoc blocks.
Soy: ParamMigrator: remove empty lines in SoyDoc blocks.

GITHUB_BREAKING_CHANGES=none

-------------
Created by MOE: https://github.com/google/moe
MOE_MIGRATED_REVID=188555433

Medium/closure-templates,google/closure-templates,yext/closure-templates,yext/closure-templates,google/closure-templates,Medium/closure-templates,Medium/closure-templates,google/closure-templates,yext/closure-templates,google/closure-templates,Medium/closure-templates,google/closure-templates,Medium/closure-templates,yext/closure-templates