align code blocks with their paragraphs

Author: tshepang

src/asm.md

@@ -10,12 +10,13 @@ through all of the compiler layers down to LLVM codegen. Throughout the various
 
 - The template string, which is stored as an array of `InlineAsmTemplatePiece`. Each piece
 represents either a literal or a placeholder for an operand (just like format strings).
-```rust
-pub enum InlineAsmTemplatePiece {
-    String(String),
-    Placeholder { operand_idx: usize, modifier: Option<char>, span: Span },
-}
-```
+
+  ```rust
+  pub enum InlineAsmTemplatePiece {
+	  String(String),
+	  Placeholder { operand_idx: usize, modifier: Option<char>, span: Span },
+  }
+  ```
 
 - The list of operands to the `asm!` (`in`, `[late]out`, `in[late]out`, `sym`, `const`). These are
 represented differently at each stage of lowering, but follow a common pattern:
@@ -34,21 +35,22 @@ or a `fn`.
 - The options set at the end of the `asm!` macro. The only ones that are of particular interest to
 rustc are `NORETURN` which makes `asm!` return `!` instead of `()`, and `RAW` which disables format
 string parsing. The remaining options are mostly passed through to LLVM with little processing.
-```rust
-bitflags::bitflags! {
-    pub struct InlineAsmOptions: u16 {
-        const PURE = 1 << 0;
-        const NOMEM = 1 << 1;
-        const READONLY = 1 << 2;
-        const PRESERVES_FLAGS = 1 << 3;
-        const NORETURN = 1 << 4;
-        const NOSTACK = 1 << 5;
-        const ATT_SYNTAX = 1 << 6;
-        const RAW = 1 << 7;
-        const MAY_UNWIND = 1 << 8;
-    }
-}
-```
+
+  ```rust
+  bitflags::bitflags! {
+	  pub struct InlineAsmOptions: u16 {
+		  const PURE = 1 << 0;
+		  const NOMEM = 1 << 1;
+		  const READONLY = 1 << 2;
+		  const PRESERVES_FLAGS = 1 << 3;
+		  const NORETURN = 1 << 4;
+		  const NOSTACK = 1 << 5;
+		  const ATT_SYNTAX = 1 << 6;
+		  const RAW = 1 << 7;
+		  const MAY_UNWIND = 1 << 8;
+	  }
+  }
+  ```
 
 ## AST