Corrected links and code

README.rst

@@ -181,15 +181,15 @@ inconsistencies in the pagination (such as an instance that appears on two diffe
 System models
 -------------
 
-`Clickhouse docs <https://clickhouse.yandex/reference_en.html#System tables>`
+`Clickhouse docs <https://clickhouse.yandex/reference_en.html#System tables>`_.
 
 System models are read only models for implementing part of the system's functionality,
 and for providing access to information about how the system is working.
 
-Usage example:
+Usage example::
 
     >>>> from infi.clickhouse_orm import system_models
-    >>>> print(system_models.SystemPart.all())
+    >>>> print(system_models.SystemPart.get(Database()))
 
 Currently the following system models are supported:
 
@@ -203,7 +203,7 @@ SystemPart           system.parts    Gives methods to work with partitions. See
 Partitions and parts
 --------------------
 
-`ClickHouse docs <https://clickhouse.yandex/reference_en.html#Manipulations with partitions and parts>`
+`ClickHouse docs <https://clickhouse.yandex/reference_en.html#Manipulations with partitions and parts>`_.
 
 A partition in a table is data for a single calendar month. Table "system.parts" contains information about each part.
 
@@ -303,7 +303,7 @@ Working with materialized and alias fields
 
 ClickHouse provides an opportunity to create MATERIALIZED and ALIAS Fields.
 
-See documentation `here <https://clickhouse.yandex/reference_en.html#Default values>`.
+See documentation `here <https://clickhouse.yandex/reference_en.html#Default values>`_.
 
 Both field types can't be inserted into database directly.
 These field values are ignored, when using database.insert() method.