AP_BattMonitor: comment fix

libraries/AP_BattMonitor/AP_BattMonitor_SMBus.cpp

@@ -61,7 +61,7 @@ bool AP_BattMonitor_SMBus::read_full_charge_capacity(void)
 }
 
 // reads the remaining capacity
-// returns true if the read was succesful, which is only considered to be the
+// returns true if the read was successful, which is only considered to be the
 // we know the full charge capacity
 bool AP_BattMonitor_SMBus::read_remaining_capacity(void)
 {

libraries/AP_BattMonitor/AP_BattMonitor_SMBus.h

@@ -61,7 +61,7 @@ protected:
     bool read_full_charge_capacity(void);
 
     // reads the remaining capacity
-    // returns true if the read was succesful, which is only considered to be the
+    // returns true if the read was successful, which is only considered to be the
     // we know the full charge capacity
     bool read_remaining_capacity(void);