update versoin code (#19265)

Author: PatriceJiang

cocos/cocos2d.h

@@ -31,7 +31,7 @@ THE SOFTWARE.
 
 // 0x00 HI ME LO
 // 00   03 08 00
-#define COCOS2D_VERSION 0x00031700
+#define COCOS2D_VERSION 0x00031701
 
 //
 // all cocos2d include files

docs/RELEASE_NOTES.md

@@ -20,7 +20,7 @@ The 3.17.1 release focuses on bug fixing.
 - Android upgrade Gradle to 4.6, SDK 28, android gradle plugin 3.1.0 
 - upgrade LuaJIT to 2.1.0-beta3, fix random crash in 3.17 Lua release mode
 - upgrade libwebsockets to 2.4.2
-- FileUtils provide thread-safe implementation and add missing cross-platform interface
+- FileUtils provide thread-safe implementation and add missing cross-platform interfaces
 - limit Labels text length to fix render error
 - add Downloader binding to Lua
 

docs/doxygen.config

@@ -38,7 +38,7 @@ PROJECT_NAME           = Cocos2d-x
 # could be handy for archiving the generated documentation or if some version
 # control system is used.
 
-PROJECT_NUMBER         = v3.16
+PROJECT_NUMBER         = v3.17.1
 
 # Using the PROJECT_BRIEF tag one can provide an optional one line description
 # for a project that appears at the top of each page and should give viewer a