ASFHyP3/hyp3-docs: HyP3 Docs v0.3.25

Changed <ul> <li>Updated Figure 2 in <a href="docs/guides/introduction_to_sar.md">Introduction to SAR</a></li> <li>Updated Figure 2 in <a href="docs/guides/insar_product_guide.md">InSAR Product Guide</a></li> </ul&gt