[pre-commit.ci] auto fixes from pre-commit.com hooks

for more information, see https://pre-commit.ci

src/particles/elements/Quad.H

@@ -134,7 +134,7 @@ namespace impactx
                 tout = t + (slice_ds/betgam2)*pt;
                 // ptout = pt;
             } else {
-                // advance position and momentum (zero strength = drift)  
+                // advance position and momentum (zero strength = drift)
                 xout = x + slice_ds * px;
                 // pxout = px;
                 yout = y + slice_ds * py;