update readme (#2)

Author: stolik1984

README.md

@@ -86,7 +86,7 @@ Only refilling is performed in case of first maintenance (from factory state).
 - Write random value in 90-99 range
 - Read register again to check that it contains new value
 
-- write_el_reboot.py
+**_write_el_reboot.py_**
 
 - Write 1 to reboot holding register (4)
 - Wait until electrolyser is rebooted

run_el_maintenance.py

@@ -52,7 +52,7 @@
 # Timeout (seconds) after writing to somehow guarantee that value is updated
 REGISTER_WRITE_TIMEOUT: Final[int] = 2
 
-# Electrolyte presence check is required after water pipe connection
+# Check pressure and electrolyte presence (optionally) after pipe connection
 MAX_WATER_PIPE_CONNECT_ATTEMPTS: Final[int] = 5
 
 INPUT_CONFIRMATION: Final[str] = 'YES'