Fixed spurious copy-paste error.

src/site/markdown/building.md

@@ -35,7 +35,7 @@ For systems not providing maven as a package, maven can be
 Apache Software Foundation. This site also explains the
 installation procedure.
 
-As with all maven enabled projects, building Rugged is straightforward, simply
+As with all maven enabled projects, building Orekit is straightforward, simply
 run:
 
     mvn assembly:single
@@ -74,7 +74,7 @@ The simplest way to use Orekit with Eclipse is to follow these steps:
   * unpack the distribution inside your Eclipse workspace
 
   * create a new java project from existing sources and direct Eclipse to the
-     directory where you unpacked Rugged
+     directory where you unpacked Orekit
 
   * set the source folders to
     * orekit/src/main/java

src/site/markdown/downloads.md

@@ -40,7 +40,7 @@ ones since the other packages (binary jars, javadoc jars and even the bulk
 of this site) are created from these sources.
 
 Orekit is also available in maven central repository,
-with groupID org.orekit and artifactId rugged-core, rugged-aster, ... so maven
+with groupID org.orekit and artifactId orekit so maven
 internal mechanism will download automatically all artifacts and dependencies
 as required.