Many bug fixes and improvements (#1270)

* Add Ruby and Kotlin icons
Add the avatar of @curtishd

* Update README

* Synchronize zh-hant and zh versions.

* Translate the pythontutor blocks to traditional Chinese

* Fix en/mkdocs.yml

* Update the landing page of the en version.

* Fix the Dockerfile

* Refine the en landingpage

* Fix en landing page

* Reset the README.md

zh-hant/codes/go/chapter_dynamic_programming/coin_change.go

@@ -48,7 +48,7 @@ func coinChangeDPComp(coins []int, amt int) int {
 	}
 	// 狀態轉移
 	for i := 1; i <= n; i++ {
-		// 倒序走訪
+		// 正序走訪
 		for a := 1; a <= amt; a++ {
 			if coins[i-1] > a {
 				// 若超過目標金額，則不選硬幣 i

zh-hant/codes/go/chapter_dynamic_programming/coin_change_ii.go

@@ -39,7 +39,7 @@ func coinChangeIIDPComp(coins []int, amt int) int {
 	dp[0] = 1
 	// 狀態轉移
 	for i := 1; i <= n; i++ {
-		// 倒序走訪
+		// 正序走訪
 		for a := 1; a <= amt; a++ {
 			if coins[i-1] > a {
 				// 若超過目標金額，則不選硬幣 i