Tidy up briki files

boards/briki_abc_esp32.json

@@ -32,7 +32,6 @@
     "maximum_size": 3407872,
     "require_upload_port": true,
     "speed": 1500000
-
   },
   "url": "https://briki.org",
   "vendor": "meteca"

boards/briki_mbc-wb_esp32.json

@@ -11,7 +11,7 @@
     "mcu": "esp32",
     "variant": "briki_mbcwb_esp32",
     "partitions": "8MB_ffat.csv"
-    },
+  },
   "connectivity": [
     "wifi",
     "bluetooth",
@@ -32,7 +32,6 @@
     "maximum_size": 3407872,
     "require_upload_port": true,
     "speed": 1500000
-
   },
   "url": "https://briki.org",
   "vendor": "meteca"

platform.py

@@ -38,9 +38,9 @@ class Espressif32Platform(PlatformBase):
         build_core = variables.get(
             "board_build.core", self.board_config(variables.get("board")).get(
                 "build.core", "arduino")).lower()
-        if build_core == 'mbcwb':
-            self.packages["framework-arduinoespressif32"]["optional"] = True
-            self.packages["framework-arduino-mbcwb"]["optional"] = False
+        if build_core == "mbcwb":
+            self.packages['framework-arduinoespressif32']['optional'] = True
+            self.packages['framework-arduino-mbcwb']['optional'] = False
 
         return PlatformBase.configure_default_packages(self, variables,
                                                        targets)