Fix spelling errors

src/network/connection.h

@@ -88,7 +88,7 @@ extern void net_con_close(struct net_connection* con);
  *
  * @return returns the number of bytes sent.
  *         0 if no data is sent, and this function should be called again (EWOULDBLOCK/EINTR)
- *        <0 if an error occured, the negative number contains the error code.
+ *        <0 if an error occurred, the negative number contains the error code.
  */
 extern ssize_t net_con_send(struct net_connection* con, const void* buf, size_t len);
 
@@ -97,7 +97,7 @@ extern ssize_t net_con_send(struct net_connection* con, const void* buf, size_t
  *
  * @return returns the number of bytes sent.
  *         0 if no data is sent, and this function should be called again (EWOULDBLOCK/EINTR)
- *        <0 if an error occured, the negative number contains the error code.
+ *        <0 if an error occurred, the negative number contains the error code.
  */
 extern ssize_t net_con_recv(struct net_connection* con, void* buf, size_t len);
 

src/network/ipcalc.h

@@ -92,7 +92,7 @@ extern int ip_is_valid_ipv6(const char* address);
  *
  * @param text_addr is an ipaddress either ipv6 or ipv4.
  *                  Special magic addresses called "any" and "loopback" exist,
- *                  and will work accross IPv6/IPv4.
+ *                  and will work across IPv6/IPv4.
  * @param port      Fill the struct sockaddr* with the given port, can safely be ignored.
  */
 extern int ip_convert_address(const char* text_address, int port, struct sockaddr* addr, socklen_t* addr_len);

src/network/network.h

@@ -63,7 +63,7 @@ extern int net_monitor_count();
 extern int net_monitor_capacity();
 
 /**
- * @return the last error code occured.
+ * @return the last error code occurred.
  *
  * NOTE: On Windows this is the last error code from the socket library, but
  *       on UNIX this is the errno variable that can be overwritten by any