doc/configuration: drop additional space/line

Signed-off-by: Bastian Krause <bst@pengutronix.de>

Author: Bastian-Krause

doc/configuration.rst

@@ -436,7 +436,7 @@ A :any:`WaveshareModbusTCPCoil` describes a Waveshare branded coil accessible vi
    WaveshareModbusTCPCoil:
      host: '192.168.23.42'
      coil: 1
-     coil_count: 8 
+     coil_count: 8
 
 The example describes the coil ``1`` (zero indexed) of ``8`` on the Waveshare Modbus TCP relay
 module ``192.168.23.42``.
@@ -452,7 +452,6 @@ Arguments:
 Used by:
   - `WaveShareModbusCoilDriver`_
 
-
 DeditecRelais8
 ++++++++++++++
 A :any:`DeditecRelais8` describes a *Deditec USB GPO module* with 8 relays.