removed < sign in tile.clean_lib to prevent interpretation as html tag

sen2chain/tiles.py

@@ -722,7 +722,7 @@ class Tile:
         for f in self._paths["l2a"].glob("*L2A*.SAFE"):
             # Nb jp2 < 7
             if len(list(f.glob("GRANULE/*/IMG_DATA/R10m/*.jp2"))) < 7:
-                txt = "Corrupted L2A {} in L2A folder (nb jp2 <7 in R10m folder)".format(f.name)
+                txt = "Corrupted L2A {} in L2A folder (less than 7 jp2 files in R10m folder)".format(f.name)
                 prob_id.append(txt)
                 logger.info(txt)
                 nb_id += 1