now the div are span for the kw in the listings

[Iximiel]

Description

This is the same tiny bit I have set up in a PR for Plumed2HTML.

The problem is that the div elements in the listing of the plumed examples in the manual causes extra new lines when copy-pasting the plumed examples.

for example

dist: DISTANCES ATOMS1=1,300 ATOMS2=1,400 ATOMS3=1,500

gets pasted as:

dist: DISTANCES ATOMS1
=1,300 ATOMS2
=1,400 ATOMS3
=1,500

I do not know if is the keyword element or the tooltip that pops up, but using to span will solve that problem (at least on Firefox).

Target release

I would like my code to appear in release v2.9

Type of contribution

• changes to code or doc authored by PLUMED developers, or additions of code in the core or within the default modules
• changes to a module not authored by you
• new module contribution or edit of a module authored by you

Copyright

• I agree to transfer the copyright of the code I have written to the PLUMED developers or to the author of the code I am modifying.

• the module I added or modified contains a COPYRIGHT file with the correct license information. Code should be released under an open source license. I also used the command cd src && ./header.sh mymodulename in order to make sure the headers of the module are correct.

Tests

• I added a new regtest or modified an existing regtest to validate my changes.
• I verified that all regtests are passed successfully on GitHub Actions.