Editorial: Eliminate "Contained within" (#3361)

Change the 3 occurrences of
    a |Block|, |CaseClause|, or |DefaultClause| Contained within _code_
to
    any |Block|, |CaseClause|, or |DefaultClause| _x_ such that _code_ Contains _x_ is *true*

(See #2663 (comment))

spec.html

@@ -51033,7 +51033,7 @@ <h1>Changes to FunctionDeclarationInstantiation</h1>
         <p>During FunctionDeclarationInstantiation the following steps are performed in place of step <emu-xref href="#step-functiondeclarationinstantiation-web-compat-insertion-point"></emu-xref>:</p>
         <emu-alg replaces-step="step-functiondeclarationinstantiation-web-compat-insertion-point">
           1. If _strict_ is *false*, then
-            1. For each |FunctionDeclaration| _f_ that is directly contained in the |StatementList| of a |Block|, |CaseClause|, or |DefaultClause| Contained within _code_, do
+            1. For each |FunctionDeclaration| _f_ that is directly contained in the |StatementList| of any |Block|, |CaseClause|, or |DefaultClause| _x_ such that _code_ Contains _x_ is *true*, do
               1. Let _F_ be the StringValue of the |BindingIdentifier| of _f_.
               1. If replacing the |FunctionDeclaration| _f_ with a |VariableStatement| that has _F_ as a |BindingIdentifier| would not produce any Early Errors for _func_ and _parameterNames_ does not contain _F_, then
                 1. NOTE: A var binding for _F_ is only instantiated here if it is neither a VarDeclaredName, the name of a formal parameter, or another |FunctionDeclaration|.
@@ -51058,7 +51058,7 @@ <h1>Changes to GlobalDeclarationInstantiation</h1>
             1. Let _strict_ be ScriptIsStrict of _script_.
             1. If _strict_ is *false*, then
               1. Let _declaredFunctionOrVarNames_ be the list-concatenation of _declaredFunctionNames_ and _declaredVarNames_.
-              1. For each |FunctionDeclaration| _f_ that is directly contained in the |StatementList| of a |Block|, |CaseClause|, or |DefaultClause| Contained within _script_, do
+              1. For each |FunctionDeclaration| _f_ that is directly contained in the |StatementList| of any |Block|, |CaseClause|, or |DefaultClause| _x_ such that _script_ Contains _x_ is *true*, do
                 1. Let _F_ be the StringValue of the |BindingIdentifier| of _f_.
                 1. If replacing the |FunctionDeclaration| _f_ with a |VariableStatement| that has _F_ as a |BindingIdentifier| would not produce any Early Errors for _script_, then
                   1. If _env_.HasLexicalDeclaration(_F_) is *false*, then
@@ -51083,7 +51083,7 @@ <h1>Changes to EvalDeclarationInstantiation</h1>
         <emu-alg replaces-step="step-evaldeclarationinstantiation-web-compat-insertion-point">
           1. If _strict_ is *false*, then
             1. Let _declaredFunctionOrVarNames_ be the list-concatenation of _declaredFunctionNames_ and _declaredVarNames_.
-            1. For each |FunctionDeclaration| _f_ that is directly contained in the |StatementList| of a |Block|, |CaseClause|, or |DefaultClause| Contained within _body_, do
+            1. For each |FunctionDeclaration| _f_ that is directly contained in the |StatementList| of any |Block|, |CaseClause|, or |DefaultClause| _x_ such that _body_ Contains _x_ is *true*, do
               1. Let _F_ be the StringValue of the |BindingIdentifier| of _f_.
               1. If replacing the |FunctionDeclaration| _f_ with a |VariableStatement| that has _F_ as a |BindingIdentifier| would not produce any Early Errors for _body_, then
                 1. Let _bindingExists_ be *false*.