Docs: fix table formatting (#517)

Author: rajadilipkolli

docs/src/main/asciidoc/migration.adoc

@@ -2,7 +2,7 @@
 
 Properties that have changed from 2.x to 3.x are listed below:
 
-[cols="3*", options="header"]
+[cols="2*", options="header", width=100%, %autowidth]
 |===
 |Version 2.x
 |Version 3.x