fix bug in readthedocs sphinx conf.py

Author: Héctor Nieto

docs/conf.py

@@ -18,7 +18,7 @@
 # If extensions (or modules to document with autodoc) are in another directory,
 # add these directories to sys.path here. If the directory is relative to the
 # documentation root, use os.path.abspath to make it absolute, like shown here.
-sys.path.insert(0, os.path.abspath('../src/'))
+sys.path.insert(0, os.path.abspath('../pyTSEB/'))
 # -- General configuration -----------------------------------------------------
 
 # If your documentation needs a minimal Sphinx version, state it here.