update documentation

Author: Carsten Kuebler

.clang-format

@@ -0,0 +1,7 @@
+IndentWidth: 4
+ColumnLimit: 80
+BasedOnStyle: Google
+UseTab: Never
+BreakBeforeBraces: Allman
+MaxEmptyLinesToKeep: 1
+ReflowComments: true

osi_lane.proto

@@ -69,17 +69,13 @@ message Lane
         //
         // \note The center line is the line that a typical vehicle follows more
         // or less (depending on the situation, a little more to the left or
-        // right of the center line). Thus, if the road narrows (e.g. at a
-        // construction site) this line is supposed to describe the trajectory
-        // that the vehicle should follow. Depending on the size of the vehicle,
-        // the vehicle may not be able to orient itself directly on the center
-        // line due to its dimensions, but may have to deviate from it in order
-        // to avoid e.g. a collision. The intended direction of travel on the
+        // right of the center line). The intended direction of travel on the
         // lane is given by the direction defined by the sequence of points
-        // forming the center line.
+        // forming the \c #centerline w.r.t. \c #centerline_is_driving_direction.
         //
         // \note The \c #centerline is defined only for \c #type =
         // \c #TYPE_DRIVING and one \c #lane_pairing pair.
+        //
         // \note Intersections and non-driving lanes do not have a center line.
         // A vehicle must calculate this individually and depending on the
         // situation.