Fix some doxygen errors

include/libssh/server.h

@@ -59,11 +59,14 @@ typedef struct ssh_bind_struct* ssh_bind;
 LIBSSH_API ssh_bind ssh_bind_new(void);
 
 /**
- * @brief Set the opitons for the current SSH server bind.
+ * @brief Set the options for the current SSH server bind.
  *
- * @param  ssh_bind     The ssh server bind to use.
+ * @param  sshbind     The ssh server bind to configure.
  *
- * @param  options      The option structure to set.
+ * @param  type         Option to set up.
+ * @param  value        Value to set.
+ * @returns SSH_OK	    No error.
+ * @returns SSH_ERROR   Invalid option or parameter.
  */
 LIBSSH_API int ssh_bind_options_set(ssh_bind sshbind,
     enum ssh_bind_options_e type, const void *value);

libssh/server.c

@@ -858,7 +858,7 @@ char *ssh_message_channel_request_subsystem(ssh_message msg){
 
 /** @brief defines the SSH_MESSAGE callback
  * @param session the current ssh session
- * @param ssh_message_callback a function pointer to a callback taking the
+ * @param ssh_message_callback_ a function pointer to a callback taking the
  * current ssh session and received message as parameters. the function returns
  * 0 if the message has been parsed and treated sucessfuly, 1 otherwise (libssh
  * must take care of the response).