tweak png copy button label (#1062)

* tweak png copy button label

* fix lint

src/components/ExportDialog.tsx

@@ -135,8 +135,8 @@ function ExportModal({
               <ToolButton
                 type="button"
                 icon={clipboard}
-                title={t("buttons.copyToClipboard")}
-                aria-label={t("buttons.copyToClipboard")}
+                title={t("buttons.copyPngToClipboard")}
+                aria-label={t("buttons.copyPngToClipboard")}
                 onClick={() => onExportToClipboard(exportedElements, scale)}
               />
             )}

src/locales/en.json

@@ -52,6 +52,7 @@
     "exportToPng": "Export to PNG",
     "exportToSvg": "Export to SVG",
     "copyToClipboard": "Copy to clipboard",
+    "copyPngToClipboard": "Copy PNG to clipboard",
     "save": "Save",
     "load": "Load",
     "getShareableLink": "Get shareable link",