Improve formatting, add missing newlines

Summary:
Improve formatting

Task ID: #

Blame Rev:

Test Plan:
make

Revert Plan:

Database Impact:

Memcache Impact:

Other Notes:

EImportant:

- begin *PUBLIC* platform impact section -
Bugzilla: #
- end platform impact -

Reviewers: igor

Reviewed By: igor

Subscribers: dhruba

Differential Revision: https://reviews.facebook.net/D29829

include/rocksdb/options.h

@@ -322,6 +322,7 @@ struct ColumnFamilyOptions {
   //
   // Dynamically changeable through SetOptions() API
   uint64_t target_file_size_base;
+
   // By default target_file_size_multiplier is 1, which means
   // by default files in different levels will have similar size.
   //
@@ -341,6 +342,7 @@ struct ColumnFamilyOptions {
   //
   // Dynamically changeable through SetOptions() API
   uint64_t max_bytes_for_level_base;
+
   // Default: 10.
   //
   // Dynamically changeable through SetOptions() API