Fix modules/ typos

Found using `codespell -q 3 -S ./3rdparty -L activ,amin,ang,atleast,childs,dof,endwhile,halfs,hist,iff,nd,od,uint`

backporting of commit: ec43292e1e

platforms/android/service/engine/src/org/opencv/engine/OpenCVEngineInterface.aidl

@@ -1,7 +1,7 @@
 package org.opencv.engine;
 
 /**
-* Class provides Java interface to OpenCV Engine Service. Is synchronious with native OpenCVEngine class.
+* Class provides Java interface to OpenCV Engine Service. Is synchronous with native OpenCVEngine class.
 */
 interface OpenCVEngineInterface
 {

platforms/ios/build_framework.py

@@ -31,7 +31,7 @@ from __future__ import print_function
 import glob, re, os, os.path, shutil, string, sys, argparse, traceback, multiprocessing
 from subprocess import check_call, check_output, CalledProcessError
 
-IPHONEOS_DEPLOYMENT_TARGET='8.0'  # default, can be changed via command line options or environemnt variable
+IPHONEOS_DEPLOYMENT_TARGET='8.0'  # default, can be changed via command line options or environment variable
 
 def execute(cmd, cwd = None):
     print("Executing: %s in %s" % (cmd, cwd), file=sys.stderr)