modified code for different hardware version

boards/stm32l031k6.json

@@ -6,7 +6,7 @@
       "mcu": "stm32l031k6t6",
       "product_line": "STM32L031xx",
       "variant": "STM32L031K6",
-      "variants_dir": "../variants"
+      "variants_dir": "variants"
     },
     "debug": {
       "default_tools": [
@@ -26,7 +26,7 @@
       "stm32cube",
       "libopencm3"
     ],
-    "name": "ST Nucleo L031K6",
+    "name": "STM32L031K6",
     "upload": {
       "maximum_ram_size": 8192,
       "maximum_size": 32768,