progdocs: Fix for Doxygen, the hidden parts.

ASTERISK-29779

Change-Id: If338163488498f65fa7248b60e80299c0a928e4b

pbx/pbx_dundi.c

@@ -4527,7 +4527,7 @@ static void build_mapping(const char *name, const char *value)
 		ast_log(LOG_WARNING, "Expected at least %d arguments in map, but got only %d\n", 4, x);
 }
 
-/* \note Called with the peers list already locked */
+/*! \note Called with the peers list already locked */
 static int do_register(const void *data)
 {
 	struct dundi_ie_data ied;

pbx/pbx_lua.c

@@ -174,11 +174,12 @@ static int lua_pbx_findapp(lua_State *L)
  * lua, don't call directly)
  *
  * \param L the lua_State to use
- * \return nothing
  *
  * This funciton is executed as the '()' operator for apps accessed through the
  * 'app' table.
  *
+ * \return LUA error
+ *
  * \code
  * app.playback('demo-congrats')
  * \endcode
@@ -293,6 +294,8 @@ static int lua_pbx_exec(lua_State *L)
  * 'get()' function in the following example as would be seen in
  * extensions.lua.
  *
+ * \return LUA error
+ *
  * \code
  * channel.variable:get()
  * \endcode
@@ -353,6 +356,8 @@ static int lua_get_variable_value(lua_State *L)
  * This function is the 'set()' function in the following example as would be
  * seen in extensions.lua.
  *
+ * \return LUA error
+ *
  * \code
  * channel.variable:set("value")
  * \endcode