chore(package.json): update to dgeni-packages 0.9.7

test(docsAppE2E): tighten CSS selector to only find one element

test(docsAppE2E): check that param defaults are shown in docs

Closes https://github.com/angular/dgeni-packages/pull/58

firt buggy attempt

seconds

fixed bug

fix testcase

clean up testcase

fix missing semicolon

remove trailing whitespace