Typo fix in influxdb.md
Typo fix in influxdb.md

line 51: "...and deleting and old influxdb pods."
I think it should be "...and deleting the old influxdb pods."
Stackdriver/heapster,bluebreezecf/heapster,bluebreezecf/heapster,krzyzacy/heapster,krzyzacy/heapster,Stackdriver/heapster