Make the folder names consistent

...functions/syntax/async-class-decl-private-method.template

...ns/syntax/async-class-decl-static-private-method.template

...functions/syntax/async-class-expr-private-method.template

...ns/syntax/async-class-expr-static-private-method.template

...nerators/default/async-class-decl-private-method.template

...s/default/async-class-decl-static-private-method.template

...nerators/default/async-class-expr-private-method.template

...s/default/async-class-expr-static-private-method.template

...enerators/syntax/async-class-decl-private-method.template

...rs/syntax/async-class-decl-static-private-method.template

...enerators/syntax/async-class-expr-private-method.template

...rs/syntax/async-class-expr-static-private-method.template

src/class-elements/private-methods/cls-decl.template

src/class-elements/private-methods/cls-expr.template

...ion-forms/default/cls-decl-async-gen-meth-static.template

src/function-forms/default/cls-decl-async-gen-meth.template

...unction-forms/default/cls-decl-async-meth-static.template

src/function-forms/default/cls-decl-async-meth.template

src/function-forms/default/cls-decl-gen-meth-static.template

src/function-forms/default/cls-decl-gen-meth.template