Add missing commas in template parameter list

docs/standard-library/chrono-functions.md

@@ -347,7 +347,7 @@ If the parse fails, `is.setstate`(`ios_base::failbit`) is called and the output
 
 ```cpp
 // 1) day - C++20
-template<class charT class traits, class Alloc = allocator<charT>>
+template<class charT, class traits, class Alloc = allocator<charT>>
 basic_istream<charT, traits>&
 from_stream(
     basic_istream<charT, traits>& is, const charT* fmt,

docs/standard-library/istreambuf-iterator-class.md

@@ -15,7 +15,7 @@ The class template istreambuf_iterator describes an input iterator object that e
 ## Syntax
 
 ```cpp
-template <class CharType class Traits = char_traits <CharType>>
+template <class CharType, class Traits = char_traits <CharType>>
 class istreambuf_iterator
 : public iterator<input_iterator_tag, CharType, typename Traits ::off_type, CharType*, CharType&>
 ```

docs/standard-library/ostream-iterator-class.md

@@ -15,7 +15,7 @@ The class template ostream_iterator describes an output iterator object that wri
 ## Syntax
 
 ```cpp
-template <class Type class CharType = char class Traits = char_traits <CharType>>
+template <class Type, class CharType = char, class Traits = char_traits <CharType>>
 class ostream_iterator
 ```
 

docs/standard-library/ostreambuf-iterator-class.md

@@ -13,7 +13,7 @@ The class template ostreambuf_iterator describes an output iterator object that
 ## Syntax
 
 ```cpp
-template <class CharType = char class Traits = char_traits <CharType>>
+template <class CharType = char, class Traits = char_traits <CharType>>
 ```
 
 ### Parameters