Update HLS_MSAVI_Sentinel.json (#6152)

Author: minniewong

config/default/common/config/wv.json/layers/multi-mission/hls/HLS_MSAVI_Sentinel.json

@@ -16,8 +16,8 @@
      "orbitTracks": ["OrbitTracks_Sentinel-2A_Descending", "OrbitTracks_Sentinel-2B_Descending", "OrbitTracks_Sentinel-2C_Descending"],
       "orbitDirection": ["descending", "descending", "descending"],
       "bandCombo": {
-        "assets": ["B05", "B04"],
-        "expression": "(2*B05+1-sqrt((2*B05+1)**2-8*(B05-B04)))/2",
+        "assets": ["B8A", "B04"],
+        "expression": "(2*B8A+1-sqrt((2*B8A+1)**2-8*(B8A-B04)))/2",
         "rescale": "-1,1",
         "colormap_name": "brbg",
         "bands_regex": "B[0-9][0-9A-Za-z]"