azure-sdk test: move typescript location (microsoft#36902)

Author: sandersn

tests/cases/docker/azure-sdk/Dockerfile

@@ -8,7 +8,7 @@ WORKDIR /azure-sdk/sdk/core/core-http
 # Sync up all TS versions used internally so they're all linked from a known location
 RUN rush add -p "[email protected]" --dev -m
 # Relink installed TSes to built TS
-WORKDIR /azure-sdk/common/temp/node_modules/.registry.npmjs.org/typescript/3.5.1/node_modules
+WORKDIR /azure-sdk/common/temp/node_modules/.pnpm/registry.npmjs.org/typescript/3.5.1/node_modules
 RUN rm -rf typescript
 COPY --from=typescript/typescript /typescript/typescript-*.tgz /typescript.tgz
 RUN mkdir /typescript