fix all typos

src/devices/boiler.cpp

@@ -2673,7 +2673,7 @@ bool Boiler::set_ww_circulation_pump(const char * value, const int8_t id) {
 }
 
 // Set the mode of circulation, 1x3min, ... 6x3min, continuous
-// if 0-off, switching is not possibe, if 1-7 switching to off is not possible
+// if 0-off, switching is not possible, if 1-7 switching to off is not possible
 bool Boiler::set_ww_circulation_mode(const char * value, const int8_t id) {
     uint8_t v;
     if (!Helpers::value2enum(value, v, FL_(enum_freq))) {

src/devices/boiler.h

@@ -307,8 +307,8 @@ class Boiler : public EMSdevice {
     uint8_t  wwValve_;
 
     // special
-    double  nrgHeatF_; // double calcutate for nrgHeat
-    double  nrgWwF_;   // double calcutate for nrgWw
+    double  nrgHeatF_; // double calculate for nrgHeat
+    double  nrgWwF_;   // double calculate for nrgWw
     uint8_t nomPower_;
 
     /*

src/devices/extension.cpp

@@ -25,7 +25,7 @@ REGISTER_FACTORY(Extension, EMSdevice::DeviceType::EXTENSION);
 Extension::Extension(uint8_t device_type, uint8_t device_id, uint8_t product_id, const char * version, const char * name, uint8_t flags, uint8_t brand)
     : EMSdevice(device_type, device_id, product_id, version, name, flags, brand) {
     if (device_id == 0x16) {
-        // no entities for T1RF outdoor sensor, values are comming from RFbase 0x50 (connect)
+        // no entities for T1RF outdoor sensor, values are coming from RFbase 0x50 (connect)
         return;
     }
     // Extension module EM100 device_id 0x12

src/devices/thermostat.h

@@ -55,7 +55,7 @@ class Thermostat : public EMSdevice {
         uint8_t summertemp;
         int8_t  nofrosttemp; // signed -20°C to +10°C
         uint8_t designtemp;  // heating curve design temp at MinExtTemp
-        int8_t  offsettemp;  // heating curve offest temp at roomtemp signed!
+        int8_t  offsettemp;  // heating curve offset temp at roomtemp signed!
         uint8_t manualtemp;
         uint8_t summersetmode;
         uint8_t hpoperatingmode;