Added leading space to lines starting with "---"

They are interpreted as meta information for yaml TOC
and mess up building documentation process
(with single page the second time without clean)

docs/en/engines/table-engines/integrations/postgresql.md

@@ -68,10 +68,10 @@ postgres=# insert into test (int_id, str, "float") VALUES (1,'test',2);
 INSERT 0 1
 
 postgresql> select * from test;
- int_id | int_nullable | float | str  | float_nullable
---------+--------------+-------+------+----------------
-      1 |              |     2 | test |
-(1 row)
+  int_id | int_nullable | float | str  | float_nullable
+ --------+--------------+-------+------+----------------
+       1 |              |     2 | test |
+ (1 row)
 ```
 
 Table in ClickHouse, retrieving data from the PostgreSQL table created above:

docs/en/sql-reference/table-functions/postgresql.md

@@ -64,10 +64,10 @@ postgres=# insert into test (int_id, str, "float") VALUES (1,'test',2);
 INSERT 0 1
 
 postgresql> select * from test;
- int_id | int_nullable | float | str  | float_nullable
---------+--------------+-------+------+----------------
-      1 |              |     2 | test |
-(1 row)
+  int_id | int_nullable | float | str  | float_nullable
+ --------+--------------+-------+------+----------------
+       1 |              |     2 | test |
+ (1 row)
 ```
 
 Selecting data from ClickHouse:

docs/ru/engines/table-engines/integrations/postgresql.md

@@ -68,10 +68,10 @@ postgres=# insert into test (int_id, str, "float") VALUES (1,'test',2);
 INSERT 0 1
 
 postgresql> select * from test;
- int_id | int_nullable | float | str  | float_nullable
---------+--------------+-------+------+----------------
-      1 |              |     2 | test |
-(1 row)
+  int_id | int_nullable | float | str  | float_nullable
+ --------+--------------+-------+------+----------------
+       1 |              |     2 | test |
+ (1 row)
 ```
 
 Таблица в ClickHouse, получение данных из PostgreSQL таблицы созданной выше:

docs/ru/sql-reference/table-functions/postgresql.md

@@ -62,10 +62,10 @@ postgres=# insert into test (int_id, str, "float") VALUES (1,'test',2);
 INSERT 0 1
 
 postgresql> select * from test;
- int_id | int_nullable | float | str  | float_nullable
---------+--------------+-------+------+----------------
-      1 |              |     2 | test |
-(1 row)
+  int_id | int_nullable | float | str  | float_nullable
+ --------+--------------+-------+------+----------------
+       1 |              |     2 | test |
+ (1 row)
 ```
 
 Получение данных в ClickHouse: