reference the python script for generation

Author: knarrff

contributors.tex.j2

@@ -1,6 +1,11 @@
+% The file contributors.tex is automatically generated by running contributors.py.
+% Changed within will be OVERWRITTEN.
+% For changes to the tex template, change contributors.tex.j2.
+% For changes to the author information, change contributors.yml.
+%
 {%- for author in data.authors %}
 \author[{{ author.affiliations|join(", ") }}]{{ "{" }}{{ author.author }}{{ "}" }}
 {%- endfor %}
 {%- for affiliation, index in data.affiliations.items() %}
 \affil[{{ index }}]{{ "{" }}{{ affiliation }}{{ "}" }}
-{%- endfor %}
+{%- endfor %}