fstream : サンプルコードのインデントを4 → 2スペースに修正

Author: faithandbrave

reference/fstream/basic_filebuf/close.md

@@ -44,7 +44,7 @@ int main()
   std::filebuf* buf = fs.rdbuf();
 
   if (buf->open("foo", std::ios_base::out)) {
-      buf->close();
+    buf->close();
   }
 }
 ```

reference/fstream/basic_filebuf/is_open.md

@@ -27,7 +27,7 @@ int main()
   std::filebuf* buf = fs.rdbuf();
 
   if (buf->is_open()) {
-      std::cout << "opened" << std::endl;
+    std::cout << "opened" << std::endl;
   }
 }
 ```

reference/fstream/basic_filebuf/open.md

@@ -68,7 +68,7 @@ int main()
   std::filebuf* buf = fs.rdbuf();
 
   if (buf->open("foo", std::ios_base::out)) {
-      std::cout << "opened" << std::endl;
+    std::cout << "opened" << std::endl;
   }
 }
 ```

reference/fstream/basic_fstream/is_open.md

@@ -26,7 +26,7 @@ int main()
 {
   std::fstream fs("foo", std::ios_base::out);
   if (fs.is_open()) {
-      std::cout << "opened" << std::endl;
+    std::cout << "opened" << std::endl;
   }
 }
 ```

reference/fstream/basic_ifstream/is_open.md

@@ -26,7 +26,7 @@ int main()
 {
   std::ifstream fs("foo", std::ios_base::in);
   if (fs.is_open()) {
-      std::cout << "opened" << std::endl;
+    std::cout << "opened" << std::endl;
   }
 }
 ```

reference/fstream/basic_ofstream/is_open.md

@@ -26,7 +26,7 @@ int main()
 {
   std::ofstream fs("foo", std::ios_base::out);
   if (fs.is_open()) {
-      std::cout << "opened" << std::endl;
+    std::cout << "opened" << std::endl;
   }
 }
 ```