[HAL][CRYP] Remove non UTF-8 characters in comments

Src/stm32f2xx_hal_cryp.c

diff --git a/Src/stm32f2xx_hal_cryp.c b/Src/stm32f2xx_hal_cryp.c
index 0773526..7ce1d85 100644
--- a/Src/stm32f2xx_hal_cryp.c
+++ b/Src/stm32f2xx_hal_cryp.c
@@ -299,7 +299,7 @@
   }
 #endif /* (USE_HAL_CRYP_REGISTER_CALLBACKS) */
 
-  /* Set the key size(This bit field is ‘don’t care’ in the DES or TDES modes) data type and Algorithm */
+  /* Set the key size(This bit field is "don't care" in the DES or TDES modes) data type and Algorithm */
   MODIFY_REG(hcryp->Instance->CR, CRYP_CR_DATATYPE|CRYP_CR_KEYSIZE|CRYP_CR_ALGOMODE, hcryp->Init.DataType | hcryp->Init.KeySize | hcryp->Init.Algorithm);
 
   /* Reset Error Code field */
@@ -398,7 +398,7 @@
     hcryp->Init.KeySize      = pConf->KeySize;
     hcryp->Init.pInitVect    = pConf->pInitVect;
 
-    /* Set the key size(This bit field is ‘don’t care’ in the DES or TDES modes) data type, AlgoMode and operating mode*/
+    /* Set the key size(This bit field is "don't care" in the DES or TDES modes) data type, AlgoMode and operating mode*/
     MODIFY_REG(hcryp->Instance->CR, CRYP_CR_DATATYPE|CRYP_CR_KEYSIZE|CRYP_CR_ALGOMODE, hcryp->Init.DataType | hcryp->Init.KeySize | hcryp->Init.Algorithm);
 
     /* Process Unlocked */