Standardize "Ref:" to "Reference" across files (AtsushiSakai#1210)

Updated all instances of "Ref:" to "Reference" for consistency in both code and documentation. This change improves clarity and aligns with standard terminology practices.

Author: AtsushiSakai

AerialNavigation/rocket_powered_landing/rocket_powered_landing.py

@@ -5,7 +5,7 @@
 author: Sven Niederberger
         Atsushi Sakai
 
-Ref:
+Reference:
 - Python implementation of 'Successive Convexification for 6-DoF Mars Rocket Powered Landing with Free-Final-Time' paper
 by Michael Szmuk and Behcet Acıkmese.
 

ArmNavigation/two_joint_arm_to_point_control/two_joint_arm_to_point_control.py

@@ -5,7 +5,7 @@
 Author: Daniel Ingram (daniel-s-ingram)
         Atsushi Sakai (@Atsushi_twi)
 
-Ref: P. I. Corke, "Robotics, Vision & Control", Springer 2017,
+Reference: P. I. Corke, "Robotics, Vision & Control", Springer 2017,
  ISBN 978-3-319-54413-7 p102
 - [Robotics, Vision and Control]
 (https://link.springer.com/book/10.1007/978-3-642-20144-8)

Localization/ensemble_kalman_filter/ensemble_kalman_filter.py

@@ -4,7 +4,7 @@
 
 author: Ryohei Sasaki(rsasaki0109)
 
-Ref:
+Reference:
 Ensemble Kalman filtering
 (https://rmets.onlinelibrary.wiley.com/doi/10.1256/qj.05.135)
 

Mapping/DistanceMap/distance_map.py

@@ -3,7 +3,7 @@
 
 author: Wang Zheng (@Aglargil)
 
-Ref:
+Reference:
 
 - [Distance Map]
 (https://cs.brown.edu/people/pfelzens/papers/dt-final.pdf)

Mapping/rectangle_fitting/rectangle_fitting.py

@@ -4,7 +4,7 @@
 
 author: Atsushi Sakai (@Atsushi_twi)
 
-Ref:
+Reference:
 - Efficient L-Shape Fitting for Vehicle Detection Using Laser Scanners -
 The Robotics Institute Carnegie Mellon University
 https://www.ri.cmu.edu/publications/

MissionPlanning/BehaviorTree/behavior_tree.py

@@ -3,7 +3,7 @@
 
 author: Wang Zheng (@Aglargil)
 
-Ref:
+Reference:
 
 - [Behavior Tree](https://en.wikipedia.org/wiki/Behavior_tree_(artificial_intelligence,_robotics_and_control))
 """

MissionPlanning/StateMachine/state_machine.py

@@ -3,7 +3,7 @@
 
 author: Wang Zheng (@Aglargil)
 
-Ref:
+Reference:
 
 - [State Machine]
 (https://en.wikipedia.org/wiki/Finite-state_machine)
@@ -23,7 +23,7 @@ def deflate_and_encode(plantuml_text):
     """
     zlib compress the plantuml text and encode it for the plantuml server.
 
-    Ref: https://plantuml.com/en/text-encoding
+    Reference https://plantuml.com/en/text-encoding
     """
     plantuml_alphabet = (
         string.digits + string.ascii_uppercase + string.ascii_lowercase + "-_"

PathPlanning/ElasticBands/elastic_bands.py

@@ -3,7 +3,7 @@
 
 author: Wang Zheng (@Aglargil)
 
-Ref:
+Reference:
 
 - [Elastic Bands: Connecting Path Planning and Control]
 (http://www8.cs.umu.se/research/ifor/dl/Control/elastic%20bands.pdf)

PathPlanning/Eta3SplinePath/eta3_spline_path.py

@@ -5,7 +5,7 @@
 author: Joe Dinius, Ph.D (https://jwdinius.github.io)
         Atsushi Sakai (@Atsushi_twi)
 
-Ref:
+Reference:
 - [eta^3-Splines for the Smooth Path Generation of Wheeled Mobile Robots]
 (https://ieeexplore.ieee.org/document/4339545/)
 

PathPlanning/FrenetOptimalTrajectory/cartesian_frenet_converter.py

@@ -4,7 +4,7 @@
 
 author: Wang Zheng (@Aglargil)
 
-Ref:
+Reference:
 
 - [Optimal Trajectory Generation for Dynamic Street Scenarios in a Frenet Frame]
 (https://www.researchgate.net/profile/Moritz_Werling/publication/224156269_Optimal_Trajectory_Generation_for_Dynamic_Street_Scenarios_in_a_Frenet_Frame/links/54f749df0cf210398e9277af.pdf)