docs: update extensions version information in readme

Author: AlessioGr

README.md

@@ -27,21 +27,21 @@ $ su - postgres
 $ psql
 postgres=# \dx
 
+
                                            List of installed extensions
-          Name          | Version |   Schema   |                            Description
-------------------------+---------+------------+-------------------------------------------------------------------
- fuzzystrmatch          | 1.2     | public     | determine similarities and distance between strings
- pg_trgm                | 1.6     | public     | text similarity measurement and index searching based on trigrams
- plpgsql                | 1.0     | pg_catalog | PL/pgSQL procedural language
- postgis                | 3.4.2   | public     | PostGIS geometry and geography spatial types and functions
- postgis_tiger_geocoder | 3.4.2   | tiger      | PostGIS tiger geocoder and reverse geocoder
- postgis_topology       | 3.4.2   | topology   | PostGIS topology spatial types and functions
- vector                 | 0.6.2   | public     | vector data type and ivfflat and hnsw access methods
-(8 rows)
+          name          | default_version | installed_version |                          comment                           
+------------------------+-----------------+-------------------+------------------------------------------------------------
+ fuzzystrmatch          | 1.2             | 1.2               | determine similarities and distance between strings
+ plpgsql                | 1.0             | 1.0               | PL/pgSQL procedural language
+ vector                 | 0.8.0           | 0.8.0             | vector data type and ivfflat and hnsw access methods
+ postgis                | 3.5.2           | 3.5.2             | PostGIS geometry and geography spatial types and functions
+ postgis_topology       | 3.5.2           | 3.5.2             | PostGIS topology spatial types and functions
+ postgis_tiger_geocoder | 3.5.2           | 3.5.2             | PostGIS tiger geocoder and reverse geocoder
+(6 rows)
 
 ##
 # To list all available extensions
 ##
 postgres=# select * from pg_available_extensions;
 
-```
+```