Fix typo in comments

Author: luc-github

esp3d/src/core/esp3d_commands.cpp

@@ -1482,7 +1482,7 @@ bool ESP3DCommands::dispatch(ESP3DMessage *msg) {
       tmp.replace("\r", "");
       tmp.trim();
       tmp += "\n";
-      //Override lock from Marlin if error was displayed previouly preventing any update
+      //Override lock from Marlin if error was displayed previously preventing any update
       if (ESP3DSettings::GetFirmwareTarget() == MARLIN ||
           ESP3DSettings::GetFirmwareTarget() == MARLIN_EMBEDDED) {
         tmp = "M117\n" + tmp;

esp3d/src/modules/update/update_service.cpp

@@ -132,7 +132,7 @@ bool processString(const char** keysval, const uint16_t* keypos,
                    char& T, int& P) {
   for (uint i = 0; i < size; i++) {
     if (strcasecmp(keysval[i], key) == 0) {
-      // if it is a previouly saved scrambled password ignore it
+      // if it is a previously saved scrambled password ignore it
       if (strcasecmp(value, "********") != 0) {
         T = 'S';
         P = keypos[i];