refactor(libraries/Wire): fix indentation

Co-authored-by: Jan Procházka <90197375+P-R-O-C-H-Y@users.noreply.github.com>

libraries/Wire/src/Wire.cpp

@@ -626,7 +626,7 @@ void TwoWire::flush()
 void TwoWire::onReceive( void (*function)(int) )
 {
 #if SOC_I2C_SUPPORT_SLAVE
-  user_onReceive = function;
+    user_onReceive = function;
 #endif
 }