Update boards.txt

Author: mazgch

boards.txt

@@ -4914,7 +4914,7 @@ nora_w10.menu.FlashSize.8M=8MB (64Mb)
 nora_w10.menu.FlashSize.8M.build.flash_size=8MB
 nora_w10.menu.FlashSize.8M.build.partitions=default_8MB
 #nora_w10.menu.FlashSize.16M=16MB (128Mb)
-#ßnora_w10.menu.FlashSize.16M.build.flash_size=16MB
+#nora_w10.menu.FlashSize.16M.build.flash_size=16MB
 #nora_w10.menu.FlashSize.32M=32MB (256Mb)
 #nora_w10.menu.FlashSize.32M.build.flash_size=32MB