ignore: fix hgignore to point to the correct folder
Files might have been imported initially as docs/training but were moved to
docs/tutorial and the hgignore was likely forgotten.
--- a/.hgignore Mon Dec 09 10:36:11 2019 -0800
+++ b/.hgignore Fri Nov 22 18:28:01 2019 +0100
@@ -15,10 +15,10 @@
\.ico$
tests/\.testtimes
-^docs/training/graphs/
-^docs/training/html/
-^docs/training/index.html
-^docs/training/graphviz-images/
-^docs/training/img/
-^docs/training/output/
-^docs/training/pandocfilters/
+^docs/tutorial/graphs/
+^docs/tutorial/html/
+^docs/tutorial/index.html
+^docs/tutorial/graphviz-images/
+^docs/tutorial/img/
+^docs/tutorial/output/
+^docs/tutorial/pandocfilters/