For example, linting var test = 1
results in these warnings in the Problems panel:

My suggestion:
the no-unused-vars and semi to be clickable and to link to
http://eslint.org/docs/rules/no-unused-vars and to
http://eslint.org/docs/rules/semi
respectively.

(I've found this feature in AtomLinter and it's really useful)

cc: @dbaeumer

PS. Using vscode-eslint 1.10.18 with ESLint 3.5.0 in VSCode 1.5.1 using win10 x64.