Added some docs/.rst files to .gitignore.

Signed-off-by: Daniel Scheffler <danschef@gfz-potsdam.de>

.gitignore

@@ -63,3 +63,23 @@ target/
 
 # PyCharm
 .idea/
+
+# ignored docs files
+/docs/modules.rst
+/docs/py_tools_ds.compatibility.python.rst
+/docs/py_tools_ds.compatibility.rst
+/docs/py_tools_ds.compression.rst
+/docs/py_tools_ds.convenience.rst
+/docs/py_tools_ds.db_tools.rst
+/docs/py_tools_ds.dtypes.rst
+/docs/py_tools_ds.environment.rst
+/docs/py_tools_ds.geo.raster.rst
+/docs/py_tools_ds.geo.rst
+/docs/py_tools_ds.geo.vector.rst
+/docs/py_tools_ds.io.raster.rst
+/docs/py_tools_ds.io.rst
+/docs/py_tools_ds.io.vector.rst
+/docs/py_tools_ds.numeric.rst
+/docs/py_tools_ds.processing.rst
+/docs/py_tools_ds.rst
+/docs/py_tools_ds.web.rst