Update Readme.md fixing minor code style violations

Since the merge checks lists 12 minor code style violations for the markdown document that I copied from one of the samples they are now fixed.

tools/cases/ESP32_W5500_NRF24_ext_ant_Case/Readme.md

@@ -1,16 +1,21 @@
+
 # ESP32 with W5500 and NRF24 external antenna case
 
-Case for Ahoy DTU with ESP32 and NRF24 with external antenna plus W5500 ethernet by Edibo63 in issue #1317
+Case for Ahoy DTU with ESP32 and NRF24 with external antenna 
+and a W5500 ethernet module by Edibo63 in issue #1317
+
 
+## Notes
 
-### Notes:
 Case with lots of space for dupont cabling
 
-### Print Details:
-- Print with 0.2 mm layers
+### Print Details
+
+- printed with 0.2 mm layers
 - use 15 % infill
 - no supports needed
 
-### Sample Print:
+### Sample Print
+
 - 3D Printer Kobra
 - YUANEANG PLA filament