JSON: Correcting the Sensor Class field

Signed-off-by: Abhishek Malik <abhishek.malik@intel.com>

src/grovelinefinder/grovelinefinder.json

@@ -3,7 +3,7 @@
     "Description": "Grove Line Finder Sensor Library",
     "Sensor Class":
     {
-        "grovelinefinder":
+        "GroveLineFinder":
         {
             "Name": "Infrared (IR) Based Line Finder",
             "Description": "UPM module for the Line Finder sensor. It outputs a digital signal indicating whether it is detecting black on a white background, or white on a black background.",
@@ -37,4 +37,4 @@
             }
         }
     }
-}
+}