corrected comment

src/postProcessing/functionObjects/field/streamLine/streamLineParticle.C

@@ -355,7 +355,7 @@ void Foam::streamLineParticle::hitWallPatch
     streamLineParticle::trackData& td
 )
 {
-    // Keep particle
+    // Remove particle
     td.keepParticle = false;
 }