Built-in documentation text width in Lighthouse book (#5394)

* Adjust width

* Commit changes

* Trigger Build

scripts/cli.sh

@@ -17,6 +17,9 @@ write_to_file() {
 
     # We need to add the header and the backticks to create the code block.
     printf "# %s\n\n\`\`\`\n%s\n\`\`\`" "$program" "$cmd" > "$file"
+
+    # Adjust the width of the help text and append to the end of file
+    sed -i -e '$a\'$'\n''<style> .content main {max-width:88%;} </style>' "$file"
 }
 
 CMD=./target/release/lighthouse