Update readme.md

readme.md

@@ -50,7 +50,7 @@ No support for 8-bit encodings and related *codepages*, it's time to drop them.
 - Return value
   - `std::u32string`
 - Description
-  - Converts bytes a *utf-32* string
+  - Converts bytes to a *utf-32* string
 
 [example](https://gcc.godbolt.org/z/co81s7PYx)
 
@@ -91,8 +91,8 @@ std::cout << utxt::to_utf8(U"..."sv)
 - Return value
   - `std::string` encoded bytes as `OUTENC`
 - Description
-  - Encodes a `char32_t` string or codepoint
-    The run time version contains a `switch` that instantiates the correct template
+  - Encodes a `char32_t` string or codepoint.
+    *The run time version contains a `switch` that instantiates the correct template*
 
 [example](https://gcc.godbolt.org/z/5eMWxar1Y)
 
@@ -115,8 +115,8 @@ std::string out_bytes2 = utxt::encode_as(UTF16BE, U"..."sv);
 - Return value
   - `std::string` output bytes encoded as `OUTENC`
 - Description
-  - Re-encodes a string of bytes (detecting its encoding) to a given encoding
-    The run time version contains a `switch` that instantiates the correct template
+  - Re-encodes a string of bytes (detecting its encoding) to a given encoding.
+    *The run time version contains a `switch` that instantiates the correct template*
 
 [example](https://gcc.godbolt.org/z/jf3Wh9jrK)
 
@@ -177,7 +177,7 @@ std::string_view out_bytes = utxt::reencode_if_necessary<INENC,OUTENC>(in_bytes,
 
 
 ---
-## Low level functions
+## Low level facilities
 
 ---
 ### `bytes_buffer_t` class
@@ -265,6 +265,7 @@ assert( cp == U'🔥' );
 
 ```cpp
 std::string bytes = "a ";
-char32_t codepoint = U'🍌';
+char32_t codepoint = U'🔥';
 utxt::append_codepoint<UTF8>(codepoint, bytes);
+assert( bytes == "a \xF0\x9F\x94\xA5"sv);
 ```