Update sentinel-1.md

Remocing  - Oil Slicks and Red Tide Monitoring script

sentinel-1/sentinel-1.md

@@ -38,7 +38,6 @@ The Sentinel-1 imagery is provided by two polar-orbiting satellites, operating d
 #### Marine and other water bodies environment algorithms
  - [Water surface roughness visualization](/sentinel-1/water_surface_roughness_visualization)
  - [SAR-Ice: A Sea Ice RGB Composite](/sentinel-1/sar-ice)
- - [Oil Slicks and Red Tide Monitoring](/sentinel-1/orm_index)
 
 #### Other available scripts
  - [SAR false color visualization](/sentinel-1/sar_false_color_visualization)
@@ -47,4 +46,4 @@ The Sentinel-1 imagery is provided by two polar-orbiting satellites, operating d
 #### Other multi-temporal scripts
   - [SAR multi-temporal backscatter coefficient composite](/sentinel-1/sar_multi-temporal_backscatter_coefficient_composite)
   - [Soil Moisture Estimation](/sentinel-1/soil_moisture_estimation)
-  - [Reactiv - HSV based temporal change detection](/sentinel-1/reactiv)
+  - [Reactiv - HSV based temporal change detection](/sentinel-1/reactiv)