docs: Update docs on C2 = Auto

Author: dingo35

docs/configuration.md

@@ -194,15 +194,15 @@ Use a second contactor (C2) to switch phases L2 and L3.
 - **Always Off**: C2 is always off, single-phase charging. WE RECOMMEND THIS SETTING IF YOU ARE SINGLE PHASE CHARGING IN SOLAR MODE, EVEN IF YOU DONT HAVE A second contactor INSTALLED!
 - **Always On**: C2 is always on, three-phase charging (default).
 - **Solar Off**: C2 is always on except in Solar Mode, where it is always off.
-- **Auto**: (only available when POWER SHARE Disabled or Master): SmartEVSE starts charging at 3-phase, but in Solar Mode, it will switch off C2 when there is not enough current for 3 phases, continuing on 1 phase; if there is enough current it will switch on C2, continuing on 3 phases.
+- **Auto**: (only available when POWER SHARE Disabled or Master): SmartEVSE starts charging at 3-phase, but in Solar Mode, it will switch off C2 when there is not enough current for 3 phases, continuing on 1 phase; if there is enough current it will switch on C2, continuing on 3 phases. In Smart mode we will charge 3P, since we assume you are switching to Smart mode because not enough sun is available for Solar mode.
 
 **Important**: Wire your C2 contactor according to the schematics in the [Hardware installation](installation.md).
 
 # SINGLE PHASE CHARGING
 
 SmartEVSE calculates with currents per phase; a problem arises in Solar mode, because there Isum (the sum of the currents of all phases) has to be guarded; to calculate with it per phase you have to know the number of phases you are charging.
 We try to detect the number of phases you are charging with, with the help of the settings of the second contator C2 and the EVMeter, if present.
-This detection can fail easily; not always an EVMeter is present, and even if there is, an EV could determine to start charging at one phase and later on add more phases (Teslas are known to do this); an EV could even decide during the charing process to stop charging on certain phases.
+This detection can fail easily; not always an EVMeter is present, and even if there is, an EV could determine to start charging at one phase and later on add more phases (Teslas are known to do this); an EV could even decide during the charging process to stop charging on certain phases.
 We could introduce a setting "1phase/3phase" charging, but this setting would be EV dependent if you are on a 3 phase grid; so you would have to change the setting every time another EV connects to your SmartEVSE.
 
 Currently the most reliable way to get the correct behaviour at Solar mode is: