Add missing line break (#2970)

Resolves #2958

Author: patiencedaur

doc/book/box/engines/vinyl.rst

@@ -139,8 +139,8 @@ LSM tree:
     * DELETE
     * UPSERT
 
-* Every statement is marked by LSN Append-only files, garbage is collected after
-  a checkpoint
+* Every statement is marked by LSN
+* Append-only files, garbage is collected after a checkpoint
 * Transactional log of all filesystem changes: vylog
 
 For example, an element corresponding to an insertion operation has, apart from

locale/ru/LC_MESSAGES/book/box/engines/vinyl.po

@@ -266,10 +266,14 @@ msgid "UPSERT"
 msgstr "UPSERT"
 
 msgid ""
-"Every statement is marked by LSN Append-only files, garbage is collected "
-"after a checkpoint"
+"Every statement is marked by LSN"
 msgstr ""
-"Для каждого оператора назначается LSN Обновление файлов происходит только "
+"Для каждого оператора назначается LSN"
+
+msgid ""
+"Append-only files, garbage is collected "
+"after a checkpoint"
+msgstr "Обновление файлов происходит только "
 "путем присоединения новых записей, сборка мусора проводится после "
 "контрольной точки"