docs: Update CMake target names for tests and PA

docs/build_instructions.md

@@ -49,7 +49,7 @@ cmake ..                                                 \
 - `ia2-rewriter` - builds the source-code rewriter. Depends on libclang-dev and llvm-dev.
 - `pad-tls` - builds a script for padding ELF headers for TLS segments. Only required for compartmentalized DSOs that use thread-local storage.
 - `libia2` - builds the runtime as a static library. This does not include call gate transitions as those are program-specific and generated by the rewriter. 
-- `partition-alloc` - builds the compartment-aware shim for Chromium's PartitionAlloc allocator.
+- `partition-alloc-padding` - builds the compartment-aware shim for Chromium's PartitionAlloc allocator.
 - `ia2-sandbox` - builds the syscall tracer.
 
-Tests are enumerated in `tests/CMakeLists.txt`. To build a specific test use `$TEST_main_wrapped` as the target. See the [`directory structure doc`](directory_structure.md) for an overview of the rest of the repo's contents.
+Tests are enumerated in `tests/CMakeLists.txt`. To build a specific test use `$TEST` as the target. See the [`directory structure doc`](directory_structure.md) for an overview of the rest of the repo's contents.