Use consistent spelling

Author: michael-o

maven-plugin-report-plugin/src/main/java/org/apache/maven/plugin/plugin/report/PluginReport.java

@@ -222,7 +222,7 @@ private void generateMojosDocumentation(PluginDescriptor pluginDescriptor, Local
                             disableInternalJavadocLinkValidation,
                             getLog());
                 } catch (IOException e) {
-                    throw new MavenReportException("Can not generate sink for mojo " + descriptor.getGoal(), e);
+                    throw new MavenReportException("Cannot generate sink for mojo " + descriptor.getGoal(), e);
                 }
                 renderer.render();
             }