[Editorial] Fix broken references to Trusted Types spec (#790)

Author: antosart

index.bs

@@ -1516,7 +1516,7 @@ spec:SRI; urlPrefix: https://w3c.github.io/webappsec-subresource-integrity
           whose [=TrustedScript/data=] is set to |codeString| if |isTrusted| is `true`, and
           |codeString| otherwise.
 
-      1. Let |sourceString| be the result of executing the [$Get Trusted Type compliant string$] algorithm, with
+      1. Let |sourceString| be the result of executing the [=get trusted type compliant string=] algorithm, with
          {{TrustedScript}}, |realm|, |sourceToValidate|, |compilationSink|, and `'script'`.
 
       1.  If the algorithm throws an error, throw an {{EvalError}}.
@@ -1539,7 +1539,7 @@ spec:SRI; urlPrefix: https://w3c.github.io/webappsec-subresource-integrity
 
       1.  If |source-list| is not null:
 
-          1.  Let |trustedTypesRequired| be the result of executing [$Does sink type require trusted types?$], with
+          1.  Let |trustedTypesRequired| be the result of executing [=does sink type require trusted types?=], with
               |realm|, `'script'`, and `false`.
 
           1.  If |trustedTypesRequired| is `true` and |source-list| contains a [=source expression=] which is an