Fix spacing in gcode.cpp

Followup to #6940

Marlin/gcode.cpp

 
     if (PARAM_TEST) {
 
-      while (*p == ' ') p++;                    // skip spaces vetween parameters & values
+      while (*p == ' ') p++;                    // Skip spaces between parameters & values
       const bool has_num = DECIMAL_SIGNED(*p);  // The parameter has a number [-+0-9.]
 
       #if ENABLED(DEBUG_GCODE_PARSER)
     }
 
     if (!WITHIN(*p, 'A', 'Z')) {
-      while (*p && NUMERIC(*p)) p++;              // Skip over the value section of a parameter
-      while (*p == ' ') p++;                      // Skip over all spaces
+      while (*p && NUMERIC(*p)) p++;            // Skip over the value section of a parameter
+      while (*p == ' ') p++;                    // Skip over all spaces
     }
   }
 }