Say on the Style page that 2.x fixes bugs

The trade-off still said that the output of the whole 2.x line is
byte-for-byte that of palantir-java-format, which stopped being true
with the fixes of 2.98.0.3. Like the home page, it now says the output is
the same except where it fixes a bug, and points at the list on Migrate.
The heading says "layout changes" instead of "layout fixes", because
fixes are what 2.x does take.

Author: abashev

docs/style.md

@@ -157,6 +157,7 @@ class Comments {
     }
     ```
 
-- **Layout fixes of our own wait for 3.x.** For the whole 2.x line the output is byte-for-byte the
-  same as the palantir-java-format release with the same version number. The
-  [manifesto](manifesto.md) explains why output stability comes first.
+- **Layout changes of our own wait for 3.x.** For the whole 2.x line the output is the same as the
+  palantir-java-format release with the same version number, except where it fixes a bug, such as a
+  JBang script whose directives the formatter broke. [Migrate](migrate.md#from-palantir-java-format)
+  lists those fixes, and the [manifesto](manifesto.md) explains why output stability comes first.