[skip ci] Fix doc joint -> join

src/processor/processor_motion.cpp

@@ -202,19 +202,19 @@ void ProcessorMotion::processCapture(CaptureBasePtr _incoming_ptr)
         }
         case FIRST_TIME_WITH_KF_BEFORE_INCOMING :
         {
-            // cannot joint to the KF: create own origin
+            // cannot join to the KF: create own origin
             setOrigin(getProblem()->getState(getStateStructure()), _incoming_ptr->getTimeStamp());
             break;
         }
         case FIRST_TIME_WITH_KF_ON_INCOMING :
         {
-            // can joint to the KF
+            // can join to the KF
             setOrigin(keyframe_from_callback);
             break;
         }
         case FIRST_TIME_WITH_KF_AFTER_INCOMING :
         {
-            // cannot joint to the KF: create own origin
+            // cannot join to the KF: create own origin
             setOrigin(getProblem()->getState(getStateStructure()), _incoming_ptr->getTimeStamp());
             break;
         }