Fixed uC name into startup files header

Author: pennam

targets/TARGET_STM/TARGET_STM32H7/TARGET_STM32H747xI/TARGET_PORTENTA_H7_M4/TOOLCHAIN_GCC_ARM/startup_stm32h747xx.S

@@ -1,8 +1,8 @@
 /**
   ******************************************************************************
-  * @file      startup_stm32h743xx.s
+  * @file      startup_stm32h747xx.s
   * @author    MCD Application Team
-  * @brief     STM32H743xx Devices vector table for GCC based toolchain. 
+  * @brief     STM32H747xx Devices vector table for GCC based toolchain. 
   *            This module performs:
   *                - Set the initial SP
   *                - Set the initial PC == Reset_Handler,

targets/TARGET_STM/TARGET_STM32H7/TARGET_STM32H747xI/TARGET_PORTENTA_H7_M7/TOOLCHAIN_GCC_ARM/startup_stm32h747xx.S

@@ -1,8 +1,8 @@
 /**
   ******************************************************************************
-  * @file      startup_stm32h743xx.s
+  * @file      startup_stm32h747xx.s
   * @author    MCD Application Team
-  * @brief     STM32H743xx Devices vector table for GCC based toolchain. 
+  * @brief     STM32H747xx Devices vector table for GCC based toolchain. 
   *            This module performs:
   *                - Set the initial SP
   *                - Set the initial PC == Reset_Handler,