talks: add content/ element to import paths

CL 141317 moved the talk content in the content/ subdirectory.
This CL follows up on that change by updating import paths accordingly.
After this change, go test passes.

Remove some trailing whitespace from content/2016/applicative.slide.

Change-Id: Iccfa77e0d8b5175a4dc0d97983fba09ce912ce50
Reviewed-by: Andrew Bonventre <>
Run-TryBot: Andrew Bonventre <>
TryBot-Result: Gobot Gobot <>
14 files changed