Update README.md

Author: wumpz

README.md

@@ -67,7 +67,7 @@ Also I would like to know about needed examples or documentation stuff.
 ## Extensions in the latest SNAPSHOT version 3.2
 
 * allow **ON** as a value in a set statement (`SET myvalue = ON`)
-* support for **ALTER TABLE ONLY mytable ... **
+* support for **ALTER TABLE ONLY mytable ...**
 * allow foreign key definition in alter statements without referenced columns specification
 * allow datatype **binary** for column definitions
 * support for **ALTER TABLE COLUMN DROP NOT NULL**