Fix comment about LoadBloomsOnOpen (dgraph-io#1478)

The comment about LoadBloomsOnOpen was incorrect.
This PR fixes it.

options.go

@@ -616,11 +616,10 @@ func (opt Options) WithBypassLockGuard(b bool) Options {
 // WithLoadBloomsOnOpen returns a new Options value with LoadBloomsOnOpen set to the given value.
 //
 // Badger uses bloom filters to speed up key lookups. When LoadBloomsOnOpen is set
-// to false, all bloom filters will be loaded on DB open. This is supposed to
-// improve the read speed but it will affect the time taken to open the DB. Set
-// this option to true to reduce the time taken to open the DB.
+// to false, bloom filters will be loaded lazily and not on DB open. Set this
+// option to false to reduce the time taken to open the DB.
 //
-// The default value of LoadBloomsOnOpen is false.
+// The default value of LoadBloomsOnOpen is true.
 func (opt Options) WithLoadBloomsOnOpen(b bool) Options {
 	opt.LoadBloomsOnOpen = b
 	return opt

table/table.go

@@ -85,8 +85,8 @@ type Options struct {
 	// ZSTDCompressionLevel is the ZSTD compression level used for compressing blocks.
 	ZSTDCompressionLevel int
 
-	// When LoadBloomsOnOpen is set, bloom filters will be read only when they are accessed.
-	// Otherwise they will be loaded on table open.
+	// When LoadBloomsOnOpen is set, bloom filters will be loaded while opening
+	// the table. Otherwise, they will be loaded lazily when they're accessed.
 	LoadBloomsOnOpen bool
 }