Fixed bug if there are a combination of plumed input and requests for mermaid graphs on a page

Author: Gareth Aneurin Tribello

pyproject.toml

@@ -5,7 +5,7 @@ build-backend = "setuptools.build_meta"
 
 [project]
 name = "PlumedToHTML"
-version = "0.110"
+version = "0.111"
 description = "A package for creating prettified HTML for PLUMED files"
 authors = [{ name = "Gareth Tribello", email = "[email protected]" }]
 maintainers = [{ name = "Daniele Rapetti", email = "[email protected]" }]

src/PlumedToHTML/PlumedToHTML.py

@@ -700,6 +700,7 @@ def processMarkdownString( inp, filename, plumedexe, plumed_names, actions, ofil
              else :
                 raise RuntimeError(usemermaid + "is invalid instruction for use mermaid")
              ofile.write("```mermaid\n" + mermaidinpt + "\n```\n")
+             usemermaid = ""
 
           # Check if this is the input for a command line tool and render accordingly
           for tool in cltoolregexps :