Fix typo

Author: adustm

targets/targets.json

@@ -920,7 +920,7 @@
         "inherits": ["Target"],
         "detect_code": ["0760"],
         "device_has": ["ANALOGIN", "ANALOGOUT", "I2C", "I2CSLAVE", "INTERRUPTIN", "LOWPOWERTIMER", "PORTIN", "PORTINOUT", "PORTOUT", "PWMOUT", "RTC", "SERIAL", "SERIAL_FC", "SERIAL_ASYNCH", "SLEEP", "SPI", "SPISLAVE", "STDIO_MESSAGES", "TRNG"],
-        "release_versions": ["2", "5"]
+        "release_versions": ["2", "5"],
         "device_name": "STM32L073RZ"
     },
     "NUCLEO_L152RE": {
@@ -944,7 +944,7 @@
         "inherits": ["Target"],
         "detect_code": ["0770"],
         "device_has": ["ANALOGIN", "ANALOGOUT", "I2C", "I2CSLAVE", "INTERRUPTIN", "LOWPOWERTIMER", "PORTIN", "PORTINOUT", "PORTOUT", "PWMOUT", "RTC", "SERIAL", "SERIAL_FC", "SLEEP", "SPI", "SPISLAVE", "CAN", "STDIO_MESSAGES", "TRNG"],
-        "release_versions": ["2", "5"]
+        "release_versions": ["2", "5"],
         "device_name" : "STM32L432KC"
     },
     "NUCLEO_L476RG": {
@@ -956,7 +956,7 @@
         "inherits": ["Target"],
         "detect_code": ["0765"],
         "device_has": ["ANALOGIN", "ANALOGOUT", "CAN", "I2C", "I2CSLAVE", "INTERRUPTIN", "LOWPOWERTIMER", "PORTIN", "PORTINOUT", "PORTOUT", "PWMOUT", "RTC", "SERIAL", "SERIAL_ASYNCH", "SERIAL_FC", "SLEEP", "SPI", "SPISLAVE", "STDIO_MESSAGES", "TRNG"],
-        "release_versions": ["2", "5"]
+        "release_versions": ["2", "5"],
         "device_name": "stm32l476rg"
     },
     "STM32F3XX": {
@@ -1101,7 +1101,7 @@
         "supported_toolchains": ["ARM", "uARM", "IAR", "GCC_ARM"],
         "detect_code": ["0820"],
         "device_has": ["ANALOGIN", "ANALOGOUT", "CAN", "I2C", "I2CSLAVE", "INTERRUPTIN", "LOWPOWERTIMER", "PORTIN", "PORTINOUT", "PORTOUT", "PWMOUT", "RTC", "SERIAL", "SERIAL_FC", "SLEEP", "SPI", "SPISLAVE", "STDIO_MESSAGES", "TRNG"],
-        "release_versions": ["2", "5"]
+        "release_versions": ["2", "5"],
         "device_name": "stm32l476vg"
     },
     "MTS_MDOT_F405RG": {