Fix missing end of file newline

- In the `attributes.js` file for the traces `scatter3d`, `scattergl`, and `splom`

Author: chrimaho

src/traces/scatter3d/attributes.js

@@ -178,4 +178,4 @@ var attrs = (module.exports = overrideAll(
     'nested'
 ));
 
-attrs.x.editType = attrs.y.editType = attrs.z.editType = 'calc+clearAxisTypes';
+attrs.x.editType = attrs.y.editType = attrs.z.editType = 'calc+clearAxisTypes';

src/traces/scattergl/attributes.js

@@ -111,4 +111,4 @@ attrs.x.editType = attrs.y.editType = attrs.x0.editType = attrs.y0.editType = 'c
 attrs.hovertemplate = scatterAttrs.hovertemplate;
 attrs.hovertemplatefallback = scatterAttrs.hovertemplatefallback;
 attrs.texttemplate = scatterAttrs.texttemplate;
-attrs.texttemplatefallback = scatterAttrs.texttemplatefallback;
+attrs.texttemplatefallback = scatterAttrs.texttemplatefallback;

src/traces/splom/attributes.js

@@ -183,4 +183,4 @@ module.exports = {
     },
 
     opacity: scatterGlAttrs.opacity
-};
+};