fix metadata

[FilipeFcp]

Hi @e-g-melo.

I just fixed the metadata. Should be fine know.
Thanks!

[github-actions]

Spell Check Report

DirectionalCoupler.ipynb:

Cell 1, Line 3: 'wavelength-division'
  > Directional couplers are fundamental components in photonic integrated circuits, enabling efficient splitting and combining of optical signals. By placing two parallel waveguides in close proximity, these passive devices exploit evanescent field coupling to control how light is distributed between channels. It is also possible to control the output by adjusting the relative phase between the inputs, enabling flexible power splitting ratios and switching behavior. Their design and compatibility with silicon-on-insulator technology have made them a popular choice for applications ranging from wavelength-division multiplexing to optical switching and signal processing.
Cell 18, Line 1: 'shut-off'
  > Before running the simulation, we can check the **maximum** possible Flexcredit cost. If the field decays before the runtime, the simulation will auto shut-off and we will only be billed for the Flexcredits of the effective runtime.
Cell 32, Line 4: 'viridis'
  > sc = ax.scatter(sidewall_angles, td.C_0 / np.array(freqs), c=transmittance, cmap="viridis")

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Checked 1 notebook(s). Found spelling errors in 1 file(s).
Generated by GitHub Action run: https://github.com/flexcompute/tidy3d-notebooks/actions/runs/16482462722

[e-g-melo]

Thanks @FilipeFcp!