small fixes

src/appendix/troubleshooting.md

@@ -136,7 +136,7 @@ $ rustup target add thumbv7em-none-eabihf
 
 ## Build problems
 
-### `error: language item required, but not found: \`eh_personality\``
+### `error: language item required, but not found: 'eh_personality'`
 
 #### Cause
 

src/getting-started/01.00.BUILD.md

@@ -209,22 +209,6 @@ For more information, you can read [the documentation here][cargoconfig].
 
 ### `.cargo/config`
 
-<!-- ``` toml
-# Configure builds for our target
-[target.thumbv6m-none-eabi]
-# Execute binary using gdb
-runner = "arm-none-eabi-gdb"
-# Tweak to the linking process required by the cortex-m-rt crate
-rustflags = [
-  "-C", "link-arg=-Tlink.x",
-  "-C", "link-arg=-nostartfiles",
-]
-
-# Automatically select this target when running cargo for this project
-[build]
-target = "thumbv6m-none-eabi"
-``` -->
-
 ``` toml
 {{#include ../../.cargo/config}}
 ```