graphics/dia: Wrap README at 72 columns.

Signed-off-by: B. Watson <yalhcru@gmail.com>

graphics/dia/README

@@ -1,6 +1,6 @@
-Dia is an application for creating technical diagrams. Its interface and
-features are loosely patterned after the Windows program Visio. Its features
-include multiple-page printing, export to many formats (EPS, SVG, CGM and
-PNG) and the ability to use custom shapes created by the user as simple XML
-descriptions. Dia is useful for drawing UML diagrams, network maps and
-flowcharts.
+Dia is an application for creating technical diagrams. Its interface
+and features are loosely patterned after the Windows program
+Visio. Its features include multiple-page printing, export to many
+formats (EPS, SVG, CGM and PNG) and the ability to use custom shapes
+created by the user as simple XML descriptions. Dia is useful for
+drawing UML diagrams, network maps and flowcharts.