Fix a fairly common typo in comments

include/mbedtls/ctr_drbg.h

@@ -111,7 +111,7 @@ mbedtls_ctr_drbg_context;
 
 /**
  * \brief               CTR_DRBG context initialization
- *                      Makes the context ready for mbetls_ctr_drbg_seed() or
+ *                      Makes the context ready for mbedtls_ctr_drbg_seed() or
  *                      mbedtls_ctr_drbg_free().
  *
  * \param ctx           CTR_DRBG context to be initialized

include/mbedtls/hmac_drbg.h

@@ -98,7 +98,7 @@ typedef struct
 
 /**
  * \brief               HMAC_DRBG context initialization
- *                      Makes the context ready for mbetls_hmac_drbg_seed(),
+ *                      Makes the context ready for mbedtls_hmac_drbg_seed(),
  *                      mbedtls_hmac_drbg_seed_buf() or
  *                      mbedtls_hmac_drbg_free().
  *

include/mbedtls/pkcs11.h

@@ -54,7 +54,7 @@ typedef struct {
 } mbedtls_pkcs11_context;
 
 /**
- * Initialize a mbetls_pkcs11_context.
+ * Initialize a mbedtls_pkcs11_context.
  * (Just making memory references valid.)
  */
 void mbedtls_pkcs11_init( mbedtls_pkcs11_context *ctx );

include/mbedtls/ssl.h

@@ -840,7 +840,7 @@ int mbedtls_ssl_get_ciphersuite_id( const char *ciphersuite_name );
 
 /**
  * \brief          Initialize an SSL context
- *                 Just makes the context ready for mbetls_ssl_setup() or
+ *                 Just makes the context ready for mbedtls_ssl_setup() or
  *                 mbedtls_ssl_free()
  *
  * \param ssl      SSL context

include/mbedtls/timing.h

@@ -92,7 +92,7 @@ void mbedtls_set_alarm( int seconds );
  *                 (See \c mbedtls_timing_get_delay().)
  *
  * \param data     Pointer to timing data
- *                 Must point to a valid \c mbetls_timing_delay_context struct.
+ *                 Must point to a valid \c mbedtls_timing_delay_context struct.
  * \param int_ms   First (intermediate) delay in milliseconds.
  * \param fin_ms   Second (final) delay in milliseconds.
  *                 Pass 0 to cancel the current delay.
@@ -104,7 +104,7 @@ void mbedtls_timing_set_delay( void *data, uint32_t int_ms, uint32_t fin_ms );
  *                 (Memory helper: number of delays passed.)
  *
  * \param data     Pointer to timing data
- *                 Must point to a valid \c mbetls_timing_delay_context struct.
+ *                 Must point to a valid \c mbedtls_timing_delay_context struct.
  *
  * \return         -1 if cancelled (fin_ms = 0)
  *                  0 if none of the delays are passed,