fix(docs): Fix typos (#549)

Signed-off-by: Maximilian Rosin <maximilian.rosin@parson-europe.com>

Author: max-rosin

doc/architecture/architecture_overview.adoc

@@ -25,7 +25,7 @@ The following figure shows a more advanced use case for traffic participants.
 image::{images_open_simulation_interface}/osi-traffic-participant-advanced.png[1100]
 
 The ``HostVehicleData`` interface describes the measured internal states of a traffic participant
-OSI currently provides only limited support for data structures describing measured internal states traffic participants.
+OSI currently provides only limited support for data structures describing measured internal states of traffic participants.
 Actuator intentions are currently not covered by OSI and must be handled with a different data description format.
 
 All fields in an interface are set to `optional`.

doc/architecture/feature_data.adoc

@@ -1,5 +1,5 @@
 = Feature data
 
-Feature-data messages contains detected features in the reference frame of a sensor.
+Feature-data messages contain detected features in the reference frame of a sensor.
 Feature-data messages are generated from ground-truth messages.
-It serves, for example, as input for sensor models simulating object detection or feature fusion models.
+They serve, for example, as input to sensor models simulating object detection or feature fusion models.