remove $ from code blocks in the other markdown files as well

src/android/aidl/deploy.md

@@ -16,7 +16,10 @@ Service birthdayservice: found
 You can also call the service with `service call`:
 
 ```shell
-$ {{#include ../build_all.sh:service_call_birthday_server}}
+{{#include ../build_all.sh:service_call_birthday_server}}
+```
+
+```
 Result: Parcel(
   0x00000000: 00000000 00000036 00610048 00700070 '....6...H.a.p.p.'
   0x00000010: 00200079 00690042 00740072 00640068 'y. .B.i.r.t.h.d.'

src/android/logging.md

@@ -24,7 +24,10 @@ Build, push, and run the binary on your device:
 The logs show up in `adb logcat`:
 
 ```shell
-$ adb logcat -s rust
+adb logcat -s rust
+```
+
+```
 09-08 08:38:32.454  2420  2420 D rust: hello_rust_logs: Starting program.
 09-08 08:38:32.454  2420  2420 I rust: hello_rust_logs: Things are going fine.
 09-08 08:38:32.454  2420  2420 E rust: hello_rust_logs: Something went wrong!

src/android/setup.md

@@ -4,9 +4,9 @@ We will be using an Android Virtual Device to test our code. Make sure you have
 access to one or create a new one with:
 
 ```shell
-$ source build/envsetup.sh
+source build/envsetup.sh
-$ lunch aosp_cf_x86_64_phone-userdebug
+lunch aosp_cf_x86_64_phone-userdebug
-$ acloud create
+acloud create
 ```
 
 Please see the [Android Developer

src/cargo.md

@@ -20,7 +20,7 @@ Along with cargo and rustc, Rustup will install itself as a command line utility
 On Debian/Ubuntu, you can install Cargo, the Rust source and the [Rust formatter][6] with
 
 ```shell
-$ sudo apt install cargo rust-src rustfmt
+sudo apt install cargo rust-src rustfmt
 ```
 
 This will allow [rust-analyzer][1] to jump to the definitions. We suggest using

src/exercises/concurrency/chat-app.md

@@ -77,13 +77,13 @@ described below.
 Run the server with:
 
 ```shell
-$ cargo run --bin server
+cargo run --bin server
 ```
 
 and the client with:
 
 ```shell
-$ cargo run --bin client
+cargo run --bin client
 ```
 
 ## Tasks

src/exercises/concurrency/link-checker.md

@@ -9,9 +9,9 @@ For this, you will need an HTTP client such as [`reqwest`][1]. Create a new
 Cargo project and `reqwest` it as a dependency with:
 
 ```shell
-$ cargo new link-checker
+cargo new link-checker
-$ cd link-checker
+cd link-checker
-$ cargo add --features blocking,rustls-tls reqwest
+cargo add --features blocking,rustls-tls reqwest
 ```
 
 > If `cargo add` fails with `error: no such subcommand`, then please edit the
@@ -20,14 +20,14 @@ $ cargo add --features blocking,rustls-tls reqwest
 You will also need a way to find links. We can use [`scraper`][2] for that:
 
 ```shell
-$ cargo add scraper
+cargo add scraper
 ```
 
 Finally, we'll need some way of handling errors. We use [`thiserror`][3] for
 that:
 
 ```shell
-$ cargo add thiserror
+cargo add thiserror
 ```
 
 The `cargo add` calls will update the `Cargo.toml` file to look like this:
@@ -72,7 +72,7 @@ fn main() {
 Run the code in `src/main.rs` with
 
 ```shell
-$ cargo run
+cargo run
 ```
 
 ## Tasks