fix: tox.ini syntax and gitignore

Author: jorgepiloto

.gitignore

@@ -195,3 +195,5 @@ src/ansys/grpc/
 
 # Ignore auto-generated API reference
 doc/source/api
+doc/source/examples
+doc/source/images/auto-generated

tox.ini

@@ -55,6 +55,8 @@ commands =
 description = Check if documentation generates properly
 allowlist_externals =
     pdflatex
+passenv = 
+    ANSYSLMD_LICENSE_FILE
 setenv =
     SOURCE_DIR = doc/source
     BUILD_DIR = doc/_build
@@ -63,7 +65,7 @@ setenv =
     links: BUILDER = linkcheck
     html: BUILDER = html
     pdf: BUILDER = latex
-    links,html,pdf: BUILDER_OPTS = --color -v -j auto -W --keep-going
+    links,html,pdf: BUILDER_OPTS = --color -v --keep-going
 deps = 
     -r{toxinidir}/requirements/requirements_docs.txt 
 commands =