Fix indentation and the "let" in the middle of sentence.

Author: Guohui Deng

fetch.bs

@@ -5041,11 +5041,13 @@ steps:
 
      <li><p>Let <var>type</var> be <var>blob</var>'s {{Blob/type}}.
 
+     <li><p>Let <var>coding</var> be the empty string.
+
      <li><p>Let <var>accept-coding</var> be the result of <a for="header list">getting</a>
-       `<code>Accept-Encoding</code>` from <var>request</var>'s <a for=request>header list</a>.
+        `<code>Accept-Encoding</code>` from <var>request</var>'s <a for=request>header list</a>.
         If <var>accept-encoding</var> is not null and the server selects one of the encoding options,
-        let <var>coding</var> be the selected encoding option; otherwise, i.e., no encoding is used,
-        let <var>coding</var> be <a href=https://httpwg.org/specs/rfc9110.html#field.accept-encoding>
+        set <var>coding</var> to the selected encoding option; otherwise, i.e., no encoding is used,
+        set <var>coding</var> to <a href=https://httpwg.org/specs/rfc9110.html#field.accept-encoding>
         <code>"identity"</code></a>.
 
      <li>
@@ -5152,11 +5154,13 @@ steps:
      <li><p>Let <var>mimeType</var> be <var>dataURLStruct</var>'s
      <a for="data: URL struct">MIME type</a>, <a lt="serialize a MIME type to bytes">serialized</a>.
 
+     <li><p>Let <var>coding</var> be the empty string.
+
      <li><p>Let <var>accept-coding</var> be the result of <a for="header list">getting</a>
-       `<code>Accept-Encoding</code>` from <var>request</var>'s <a for=request>header list</a>.
+        `<code>Accept-Encoding</code>` from <var>request</var>'s <a for=request>header list</a>.
         If <var>accept-encoding</var> is not null and the server selects one of the encoding options,
-        let <var>coding</var> be the selected encoding option; otherwise, i.e., no encoding is used,
-        let <var>coding</var> be <a href=https://httpwg.org/specs/rfc9110.html#field.accept-encoding>
+        set <var>coding</var> to the selected encoding option; otherwise, i.e., no encoding is used,
+        set <var>coding</var> to <a href=https://httpwg.org/specs/rfc9110.html#field.accept-encoding>
         <code>"identity"</code></a>.
 
      <li><p>Return a new <a for=/>response</a> whose <a for=response>status message</a> is