Merge pull request #47648 from bsunanda/Run3-gex187V

Run3-gex187V Update the documentation of Run3 scenarios (the Muon components)

Author: cmsbuild

Configuration/Geometry/README.md

@@ -34,7 +34,7 @@ Muon system:
 * M1: 2021 baseline with additional chambers in GE21 and iRPC31/41
 * M2: 2023 GE21 shifted in position
 * M3: 2024 with additional chambers in GE21 and iRPC31
-* M4: 2025 with additional chambers in GE21 and iRPC
+* M4: 2025 with additional chambers in GE21 and iRPC and modified DTShield
 * M5: Same as M1 with modified RPC
 * M6: Same as M2 with modified RPC
 * M7: Same as M3 with modified RPC
@@ -43,6 +43,9 @@ Muon system:
 * M10: Same as M2 with modified RPC, corrected for phi staggering and z-position
 * M11: Same as M3 with modified RPC, corrected for phi staggering and z-position
 * M12: Same as M4 with modified RPC, corrected for phi staggering and z-position
+* M13: Same as M9 with modified DTShield
+* M14: Same as M10 with modified DTShield
+* M15: Same as M11 with modified DTShield
 
 PPS:
 * P7: 2021 baseline (after removing overlaps and using common materials whenever possible)