Fix overview.md (#131)

Author: wusatosi

docs/overview.md

@@ -158,7 +158,7 @@ static_assert(not std::execution::receiver_of<example_receiver,
 </details>
 <details>
 <summary><code>scheduler&lt;<i>Scheduler</i>&gt;</code></summary>
-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.
+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`.
@@ -398,8 +398,8 @@ The queries are used to obtain properties associated with and object. Except <co
 
 ### Sender Factories
 
-- <code>just(<i>value...</i>) -> <i>sender-of</i>&lt;set_value_t(<i>Value...</i>)&gt;</i></code>
-- <code>just_error(<i>error</i>) -> <i>sender-of</i>&lt;set_error_t(<i>Error</i>)&gt;</i></code>
+- <code>just(<i>value...</i>) -> <i>sender-of</i>&lt;set_value_t(<i>Value...</i>)&gt;</code>
+- <code>just_error(<i>error</i>) -> <i>sender-of</i>&lt;set_error_t(<i>Error</i>)&gt;</code>
 - <code>just_stopped() -> <i>sender-of</i>&lt;set_stopped_t()&gt;</code>
 - <code>read_env(<i>query</i>) -> <i>sender-of</i>&lt;set_value_t(<i>query-result</i>)&gt;</code>
 - <code>schedule(<i>scheduler</i>) -> <i>sender-of</i>&lt;set_value_t()&gt;</code>