patchdoc: fix formatting of function-wrap shell alias

> Add a missed backtick to the end of a code segment so that it will be
> rendered like preceding examples.
> 
> I deeply appreciate the thoroughness of this documentation.  I noticed
> the formatting discrepancy reading https://git-scm.com/docs/git-config.
> 
> Signed-off-by: Kyle E. Mitchell <kyle@kemitchell.com>
> ---
>  Documentation/config/alias.adoc | 2 +-
>  1 file changed, 1 insertion(+), 1 deletion(-)
> 
> diff --git a/Documentation/config/alias.adoc b/Documentation/config/

>  ** A convenient way to deal with this is to write your script
>     operations in an inline function that is then called with any
>     arguments from the command-line.  For example `alias.cmd = "!c() {
> -   echo $1 | grep $2 ; }; c" will correctly execute the prior example.
> +   echo $1 | grep $2 ; }; c"` will correctly execute the prior example.
>  ** Setting `GIT_TRACE=1` can help you debug the command being run for
>     your alias.

> On Monday, 1 September 2025 20:04:18 CEST Kyle E. Mitchell wrote:
>> Add a missed backtick to the end of a code segment so that it will be
>> rendered like preceding examples.
>> 
>> I deeply appreciate the thoroughness of this documentation.  I noticed
>> the formatting discrepancy reading https://git-scm.com/docs/git-config.
>> 
>> Signed-off-by: Kyle E. Mitchell <kyle@kemitchell.com>
>> ---
>>  Documentation/config/alias.adoc | 2 +-
>>  1 file changed, 1 insertion(+), 1 deletion(-)
>> 
>> diff --git a/Documentation/config/alias.adoc b/Documentation/config/
> alias.adoc
>> index 2c5db0ad84..95825354bf 100644
>> --- a/Documentation/config/alias.adoc
>> +++ b/Documentation/config/alias.adoc
>> @@ -38,6 +38,6 @@ it will be treated as a shell command.  For example, 
> defining
>>  ** A convenient way to deal with this is to write your script
>>     operations in an inline function that is then called with any
>>     arguments from the command-line.  For example `alias.cmd = "!c() {
>> -   echo $1 | grep $2 ; }; c" will correctly execute the prior example.
>> +   echo $1 | grep $2 ; }; c"` will correctly execute the prior example.
>>  ** Setting `GIT_TRACE=1` can help you debug the command being run for
>>     your alias.
>
> Obviously correct.