Minor documentation fixes (#148)

* minor documentation fixes

* remove stray `

Author: dietmarkuehl

docs/contributing.md

@@ -3,7 +3,7 @@
 # Contributing to `beman::execution`
 
 We welcome all constructive contributions! You will have something you
-can contribute independent of your level expertise!
+can contribute independent of your level of expertise!
 
 There is a huge range of contributions needed and welcome! Here is an
 incomplete list of starting points for contributions:
@@ -21,7 +21,7 @@ incomplete list of starting points for contributions:
 * The layout of some pages related to the project can be improved.
 * Some behaviour of a component isn't tested or documented.
 * You found something which should be linked from the
-    [resources](https://github.com/bemanproject/execution/blob/main/docs/contributing.md) page.
+    [resources](https://github.com/bemanproject/execution/blob/main/docs/resources.md) page.
 * There are [pull requests](https://github.com/bemanproject/execution/pulls)
     which could be reviewed.
 * This very page or list is lacking something.

docs/overview.md

@@ -161,7 +161,7 @@ static_assert(not std::execution::receiver_of<example_receiver,
 Schedulers are used to specify the execution context where the asynchronous work is to be executed. A scheduler is a lightweight handle providing a <code><a href=‘#schedule’>schedule</a></code> operation yielding a <code><a href=‘sender’>sender</a></code> with a value <a href=‘#completion-signal’>completion signal</a> without parameters. The completion is on the respective execution context.
 
 Requirements for <code>_Scheduler_</code>:
-- The type <code>_Scheduler_::scheduler_concept</code> is an alias for `scheduler_t` or a type derived thereof`.
+- The type <code>_Scheduler_::scheduler_concept</code> is an alias for `scheduler_t` or a type derived thereof.
 - <code><a href=‘#schedule’>schedule</a>(_scheduler_) -> <a href=‘sender’>sender</a></code>
 - The <a href=‘#get-completion-scheduler’>value completion scheduler</a> of the <code><a href=‘sender’>sender</a></code>’s <a href=‘#environment’>environment</a> is the <code>_scheduler_</code>:
     _scheduler_ == std::execution::get_completion_scheduler&lt;std::execution::set_value_t&gt;(