fix

body-readable-stream.md

@@ -46,7 +46,7 @@ To clone a response _response_, run these steps:
 
 Objects implementing the Body mixin gain an associated body (null or a body, initially null).
 
-To __extract__ a body and a `Content-Type` value from _object_, run these steps:
+To __extract__ a body and a \`Content-Type\` value from _object_, run these steps:
 
 1. Let _stream_ be the result of [constructing a ReadableStream object](https://fetch.spec.whatwg.org/#concept-construct-readablestream). Rethrow any exceptions.
 1. Let _Content-Type_ be null.
@@ -108,7 +108,7 @@ In "the Request(input, init) constructor:"
 Replace the substeps in the 32th step with the following:
 
  1. Let _Content-Type_ be null.
- 1. Set _temporaryBody_ and _Content-Type_ to the result of extracting body from _init_'s body member. Rethrow any exceptions.
+ 1. Set _temporaryBody_ and _Content-Type_ to the result of extracting a body and \`Content-Type\` value from _init_'s body member. Rethrow any exceptions.
  1. (Same)
 
 Replace the substeps in the 35th step with the following:
@@ -137,7 +137,7 @@ The substeps in 7. "If _body_ is given, run these substeps" in Response construc
 
 1. (Same)
 1. Let _Content-Type_ be null.
-2. Set _r_'s response's body and _Content-Type_ to the result of extracting body from _body_. Rethrow any exceptions.
+2. Set _r_'s response's body and _Content-Type_ to the result of extracting a body and \`Content-Type\` value from _body_. Rethrow any exceptions.
 1. (Same)
 
 The body attribute's getter must return null if the associated body is null and the associated body's stream otherwise.