fix included examples and markdown(book) (#912)

* fix included examples and markdown(book)

fixes: #911

* fix footnote pre_init

* more example link updates

* Restore pool example name

* Example: pool: Upgrade to heapless v0.8

* Example: pool: thumbv6 unsupported: wild cfg-if

Experiment with multi-backend example contained in the example

* Example: lm3s6965: Updated cargo.lock

* Book: Use cargo xtask for by-example

* Docs: Contributing: cargo xtask

---------

Co-authored-by: Henrik Tjäder <henrik@tjaders.com>

1 files changed, 5 insertions, 4 deletions

diff --git a/book/en/src/by-example/app_minimal.md b/book/en/src/by-example/app_minimal.md
index 2c6f218..1712660 100644
--- a/book/en/src/by-example/app_minimal.md
+++ b/book/en/src/by-example/app_minimal.md
@@ -2,18 +2,19 @@
 
 This is the smallest possible RTIC application:
 
-``` rust,noplayground
-{{#include ../../../../rtic/examples/smallest.rs}}
+```rust,noplayground
+{{#include ../../../../examples/lm3s6965/examples/smallest.rs}}
 ```
 
 RTIC is designed with resource efficiency in mind. RTIC itself does not rely on any dynamic memory allocation, thus RAM requirement is dependent only on the application. The flash memory footprint is below 1kB including the interrupt vector table.
 
 For a minimal example you can expect something like:
-``` console
+
+```console
 $ cargo size --example smallest --target thumbv7m-none-eabi --release
 ```
 
-``` console
+```console
 Finished release [optimized] target(s) in 0.07s
    text    data     bss     dec     hex filename
     924       0       0     924     39c smallest