correct indentation

Indentation consistently 4 spaces and Part 1/Part2 contain everything else

src/SUMMARY.md

@@ -5,51 +5,48 @@
 ---
 
 - [Part 1: Building, debugging, and contributing to Rustc](./part-1-intro.md)
-- [About the compiler team](./compiler-team.md)
+	- [About the compiler team](./compiler-team.md)
-- [How to Build and Run the Compiler](./how-to-build-and-run.md)
+	- [How to Build and Run the Compiler](./how-to-build-and-run.md)
 		- [Build and Install distribution artifacts](./build-install-distribution-artifacts.md)
 		- [Documenting Compiler](./compiler-documenting.md)
-- [The compiler testing framework](./tests/intro.md)
+	- [The compiler testing framework](./tests/intro.md)
 		- [Running tests](./tests/running.md)
 		- [Adding new tests](./tests/adding.md)
 		- [Using `compiletest` + commands to control test execution](./compiletest.md)
-- [Walkthrough: a typical contribution](./walkthrough.md)
+	- [Walkthrough: a typical contribution](./walkthrough.md)
-- [Implementing new features](./implementing_new_features.md)
+	- [Implementing new features](./implementing_new_features.md)
-- [Stabilizing Features](./stabilization_guide.md)
+	- [Stabilizing Features](./stabilization_guide.md)
-- [Debugging the Compiler](./compiler-debugging.md)
+	- [Debugging the Compiler](./compiler-debugging.md)
-- [Profiling the compiler](./profiling.md)
+	- [Profiling the compiler](./profiling.md)
 		- [with the linux perf tool](./profiling/with_perf.md)
-- [Coding conventions](./conventions.md)
+	- [Coding conventions](./conventions.md)
-- [crates.io Dependencies](./crates-io.md)
+	- [crates.io Dependencies](./crates-io.md)
-- [Emitting Errors and other Diagnostics](diagnostics.md)
+	- [Emitting Errors and other Diagnostics](diagnostics.md)
 		- [JSON diagnostic format](diagnostics/json-format.md)
-
----
-
 - [Part 2: How rustc works](./part-2-intro.md)
-- [High-level overview of the compiler source](./high-level-overview.md)
+	- [High-level overview of the compiler source](./high-level-overview.md)
-- [The Rustc Driver and Interface](./rustc-driver.md)
+	- [The Rustc Driver and Interface](./rustc-driver.md)
 		- [Rustdoc](./rustdoc.md)
-- [Queries: demand-driven compilation](./query.md)
+	- [Queries: demand-driven compilation](./query.md)
 		- [The Query Evaluation Model in Detail](./queries/query-evaluation-model-in-detail.md)
 		- [Incremental compilation](./queries/incremental-compilation.md)
 		- [Incremental compilation In Detail](./queries/incremental-compilation-in-detail.md)
 		- [Debugging and Testing](./incrcomp-debugging.md)
-- [The parser](./the-parser.md)
+	- [The parser](./the-parser.md)
-- [`#[test]` Implementation](./test-implementation.md)
+	- [`#[test]` Implementation](./test-implementation.md)
-- [Macro expansion](./macro-expansion.md)
+	- [Macro expansion](./macro-expansion.md)
-- [Name resolution](./name-resolution.md)
+	- [Name resolution](./name-resolution.md)
-- [The HIR (High-level IR)](./hir.md)
+	- [The HIR (High-level IR)](./hir.md)
 		- [Lowering AST to HIR](./lowering.md)
 		- [Debugging](./hir-debugging.md)
-- [The `ty` module: representing types](./ty.md)
+	- [The `ty` module: representing types](./ty.md)
-- [Kinds](./kinds.md)
+	- [Kinds](./kinds.md)
-- [Type inference](./type-inference.md)
+	- [Type inference](./type-inference.md)
-- [Trait solving (old-style)](./traits/resolution.md)
+	- [Trait solving (old-style)](./traits/resolution.md)
 		- [Higher-ranked trait bounds](./traits/hrtb.md)
 		- [Caching subtleties](./traits/caching.md)
 		- [Specialization](./traits/specialization.md)
-- [Trait solving (new-style)](./traits/index.md)
+	- [Trait solving (new-style)](./traits/index.md)
 		- [Lowering to logic](./traits/lowering-to-logic.md)
 		    - [Goals and clauses](./traits/goals-and-clauses.md)
 		    - [Equality and associated types](./traits/associated-types.md)
@@ -63,29 +60,29 @@
 		- [The SLG solver](./traits/slg.md)
 		- [An Overview of Chalk](./traits/chalk-overview.md)
 		- [Bibliography](./traits/bibliography.md)
-- [Type checking](./type-checking.md)
+	- [Type checking](./type-checking.md)
 		- [Method Lookup](./method-lookup.md)
 		- [Variance](./variance.md)
 		- [Existential Types](./existential-types.md)
-- [The MIR (Mid-level IR)](./mir/index.md)
+	- [The MIR (Mid-level IR)](./mir/index.md)
 		- [MIR construction](./mir/construction.md)
 		- [MIR visitor and traversal](./mir/visitor.md)
 		- [MIR passes: getting the MIR for a function](./mir/passes.md)
 		- [MIR optimizations](./mir/optimizations.md)
 		- [Debugging](./mir/debugging.md)
-- [The borrow checker](./borrow_check.md)
+	- [The borrow checker](./borrow_check.md)
 		- [Tracking moves and initialization](./borrow_check/moves_and_initialization.md)
 		    - [Move paths](./borrow_check/moves_and_initialization/move_paths.md)
 		- [MIR type checker](./borrow_check/type_check.md)
 		- [Region inference](./borrow_check/region_inference.md)
 		- [Two-phase-borrows](./borrow_check/two_phase_borrows.md)
-- [Constant evaluation](./const-eval.md)
+	- [Constant evaluation](./const-eval.md)
 		- [miri const evaluator](./miri.md)
-- [Parameter Environments](./param_env.md)
+	- [Parameter Environments](./param_env.md)
-- [Code Generation](./codegen.md)
+	- [Code Generation](./codegen.md)
 	    - [Updating LLVM](./codegen/updating-llvm.md)
 	    - [Debugging LLVM](./codegen/debugging.md)
-- [Profile-guided Optimization](./profile-guided-optimization.md)
+	- [Profile-guided Optimization](./profile-guided-optimization.md)
 
 ---