Add spec docs

doc/zh-Hans/api.doxyfile

@@ -790,7 +790,17 @@ WARN_LOGFILE           =
 # spaces. See also FILE_PATTERNS and EXTENSION_MAPPING
 # Note: If this tag is empty the current directory is searched.
 
-INPUT                  = ../../include
+INPUT                  = mainpage.md \
+                         specs_data.md \
+                         spec_hardware_info.md \
+                         spec_image_params.md \
+                         spec_imu_params.md \
+                         spec_image_data.md \
+                         spec_imu_data.md \
+                         specs_ctrl.md \
+                         spec_control_api.md \
+                         spec_control_channel.md \
+                         ../../include
 
 # This tag can be used to specify the character encoding of the source files
 # that doxygen parses. Internally doxygen uses the UTF-8 encoding. Doxygen uses