Merge pull request #591 from prometheus/brian-brazil-patch-1

Document minute()

content/docs/querying/functions.md

@@ -276,6 +276,11 @@ The special cases are equivalent to those in `ln`.
 `log10(v instant-vector)` calculates the decimal logarithm for all elements in `v`.
 The special cases are equivalent to those in `ln`.
 
+## `minute()`
+
+`minute(v=vector(time()) instant-vector)` returns the minute of the hour for each
+of the given times in UTC. Returned values are from 0 to 59.
+
 ## `month()`
 
 `month(v=vector(time()) instant-vector)` returns the month of the year for each