Update encoding/README.md

Co-authored-by: Sam Sneddon <[email protected]>

Author: sideshowbarker

encoding/README.md

@@ -32,7 +32,7 @@ test data as input; this is, it's the expected result of running *only* the
 *encoding sniffing algorithm* — without also running the tokenization state
 machine and tree-construction stage defined in the spec.
 
-For all tests outside the subdirectory named "preparsed", the encoding name
+For all tests outside the subdirectory named `preparsed`, the encoding name
 indicated is instead the expected character encoding for the output after
 fully parsing the given test data; that is, it's the expected character
 encoding for the output after running the tokenization state machine and