rpc: correct error message

CHANGELOG_PENDING.md

@@ -19,8 +19,8 @@ program](https://hackerone.com/tendermint).
 
 ### IMPROVEMENTS:
 
-- [privval] \#3370 Refactors and simplifies validator/kms connection handling. Please refer to thttps://github.com/tendermint/tendermint/pull/3370#issue-257360971
 - [consensus] \#3839 Reduce "Error attempting to add vote" message severity (Error -> Info)
+- [privval] \#3370 Refactors and simplifies validator/kms connection handling. Please refer to [this comment](https://github.com/tendermint/tendermint/pull/3370#issue-257360971) for details.
 
 ### BUG FIXES:
 

rpc/core/pipe.go

@@ -160,7 +160,7 @@ func validatePage(page, perPage, totalCount int) (int, error) {
 		pages = 1 // one page (even if it's empty)
 	}
 	if page < 0 || page > pages {
-		return 1, fmt.Errorf("page should be within [0, %d] range, given %d", pages, page)
+		return 1, fmt.Errorf("page should be within [1, %d] range, given %d", pages, page)
 	}
 
 	return page, nil