Display scalar partial updates snippet in API docs (#8770)

Title.

* Follow-up to #8753

Author: teh-cmc

crates/store/re_types/definitions/rerun/archetypes/points3d.fbs

@@ -7,7 +7,7 @@ namespace rerun.archetypes;
 /// \example archetypes/points3d_simple !api title="Simple 3D points" image="https://static.rerun.io/point3d_simple/32fb3e9b65bea8bd7ffff95ad839f2f8a157a933/1200w.png"
 /// \example archetypes/points3d_random title="Randomly distributed 3D points with varying color and radius" image="https://static.rerun.io/point3d_random/7e94e1806d2c381943748abbb3bedb68d564de24/1200w.png"
 /// \example archetypes/points3d_ui_radius title="Log points with radii given in UI points" image="https://static.rerun.io/point3d_ui_radius/e051a65b4317438bcaea8d0eee016ac9460b5336/1200w.png"
-/// \example archetypes/points3d_send_columns title="Send several point clouds with varying point count over time in a single call" image="https://static.rerun.io/points3d_send_columns/633b524a2ee439b0e3afc3f894f4927ce938a3ec/1200w.png" missing="rs"
+/// \example archetypes/points3d_send_columns title="Send several point clouds with varying point count over time in a single call" image="https://static.rerun.io/points3d_send_columns/633b524a2ee439b0e3afc3f894f4927ce938a3ec/1200w.png"
 table Points3D (
   "attr.rust.archetype_eager",
   "attr.cpp.archetype_eager",

crates/store/re_types/definitions/rerun/archetypes/scalar.fbs

@@ -14,7 +14,7 @@ namespace rerun.archetypes;
 ///
 /// \example archetypes/scalar_simple title="Simple line plot" image="https://static.rerun.io/scalar_simple/8bcc92f56268739f8cd24d60d1fe72a655f62a46/1200w.png"
 /// \example archetypes/scalar_multiple_plots !api title="Multiple time series plots" image="https://static.rerun.io/scalar_multiple/15845c2a348f875248fbd694e03eabd922741c4c/1200w.png"
-/// \example archetypes/scalar_send_columns !api title="Multiple scalars in a single `send_columns` call" image="https://static.rerun.io/scalar_send_columns/b4bf172256f521f4851dfec5c2c6e3143f5d6923/1200w.png"
+/// \example archetypes/scalar_send_columns title="Multiple scalars in a single `send_columns` call" image="https://static.rerun.io/scalar_send_columns/b4bf172256f521f4851dfec5c2c6e3143f5d6923/1200w.png"
 table Scalar (
   "attr.rust.archetype_eager",
   "attr.rust.derive": "PartialEq",

crates/store/re_types/src/archetypes/scalar.rs

@@ -1,4 +1,3 @@
-#!/usr/bin/env python3
 """Use the `send_columns` API to send scalars over time in a single call."""
 
 from __future__ import annotations