Editor’s note: Get this free weekly recap of TechCrunch news that any startup can use by email every Saturday morning (7 a.m. PT). Subscribe here. DoorDash has become the go-to delivery choice for millions of people cooped up during the pandemic this year. Now it has filed an S-1, revealing its financials as it nears a long-intended IPO. These innards show an exciting business — and a larger story about how the year is going for tech companies in general. When the company filed initial public offering paperwork back in February, it…