msgb: fix doxygen docs for msgb_pull_u{8,16,32): end -> front

Change-Id: Ie9851683fa9cc88cd7f6b63ad708b4f78c8f37c9
diff --git a/include/osmocom/core/msgb.h b/include/osmocom/core/msgb.h
index 5c58c84..b05d8b6 100644
--- a/include/osmocom/core/msgb.h
+++ b/include/osmocom/core/msgb.h
@@ -442,7 +442,7 @@
 
 /*! remove uint8 from front of message
  *  \param[in] msgb message buffer
- *  \returns 8bit value taken from end of msgb
+ *  \returns 8bit value taken from the front of msgb
  */
 static inline uint8_t msgb_pull_u8(struct msgb *msgb)
 {
@@ -452,7 +452,7 @@
 
 /*! remove uint16 from front of message
  *  \param[in] msgb message buffer
- *  \returns 16bit value taken from end of msgb
+ *  \returns 16bit value taken from the front of msgb
  */
 static inline uint16_t msgb_pull_u16(struct msgb *msgb)
 {
@@ -462,7 +462,7 @@
 
 /*! remove uint32 from front of message
  *  \param[in] msgb message buffer
- *  \returns 32bit value taken from end of msgb
+ *  \returns 32bit value taken from the front of msgb
  */
 static inline uint32_t msgb_pull_u32(struct msgb *msgb)
 {