change profile analyze time range data type (#36)

diff --git a/profile.graphqls b/profile.graphqls
index e238f28..b7de239 100644
--- a/profile.graphqls
+++ b/profile.graphqls
@@ -136,7 +136,7 @@
     spans: [ProfiledSpan!]!
 }
 
-type ProfileAnalyzeTimeRange {
+input ProfileAnalyzeTimeRange {
     start: Long!
     end: Long!
 }