fix: java code

Author: yanglbme

solution/2300-2399/2391.Minimum Amount of Time to Collect Garbage/README.md

@@ -97,7 +97,7 @@ class Solution:
 ```java
 class Solution {
     public int garbageCollection(String[] garbage, int[] travel) {
-        Map<Character, Integer> last =  new HashMap<>(3);
+        Map<Character, Integer> last = new HashMap<>(3);
         int ans = 0;
         for (int i = 0; i < garbage.length; ++i) {
             String s = garbage[i];

solution/2300-2399/2391.Minimum Amount of Time to Collect Garbage/README_EN.md

@@ -95,7 +95,7 @@ class Solution:
 ```java
 class Solution {
     public int garbageCollection(String[] garbage, int[] travel) {
-        Map<Character, Integer> last =  new HashMap<>(3);
+        Map<Character, Integer> last = new HashMap<>(3);
         int ans = 0;
         for (int i = 0; i < garbage.length; ++i) {
             String s = garbage[i];

solution/2300-2399/2391.Minimum Amount of Time to Collect Garbage/Solution.java

@@ -1,6 +1,6 @@
 class Solution {
     public int garbageCollection(String[] garbage, int[] travel) {
-        Map<Character, Integer> last =  new HashMap<>(3);
+        Map<Character, Integer> last = new HashMap<>(3);
         int ans = 0;
         for (int i = 0; i < garbage.length; ++i) {
             String s = garbage[i];