Bump jinja2 from 2.9.6 to 2.11.3 in /docs

docs/requirements.txt

@@ -4,28 +4,43 @@
 #
 #    pip-compile --output-file requirements.txt requirements.in
 #
-
 -e git+https://github.com/40ants/sphinxcontrib-cldomain.git#egg=sphinxcontrib-cldomain
-
-alabaster==0.7.10         # via sphinx
-appdirs==1.4.3            # via setuptools
-babel==2.4.0              # via sphinx
-docutils==0.13.1          # via sphinx
-imagesize==0.7.1          # via sphinx
+    # via -r requirements.in
+alabaster==0.7.10
+    # via sphinx
+babel==2.4.0
+    # via sphinx
+docutils==0.13.1
+    # via sphinx
+future==0.18.2
+    # via sphinxcontrib-cldomain
+imagesize==0.7.1
+    # via sphinx
 invoke==0.15.0
-Jinja2==2.9.6             # via sphinx
-MarkupSafe==1.0           # via jinja2
-packaging==16.8           # via setuptools
-pygments-cl-repl==0.1
-pygments==2.2.0           # via pygments-cl-repl, sphinx
-pyparsing==2.2.0          # via packaging
-pytz==2017.2              # via babel
-requests==2.13.0          # via sphinx
-six==1.10.0               # via packaging, setuptools, sphinx
-snowballstemmer==1.2.1    # via sphinx
+    # via -r requirements.in
+jinja2==2.11.3
+    # via sphinx
+markupsafe==1.0
+    # via jinja2
+pygments-cl-repl==0.2
+    # via
+    #   -r requirements.in
+    #   sphinxcontrib-cldomain
+pygments==2.2.0
+    # via
+    #   pygments-cl-repl
+    #   sphinx
+pytz==2017.2
+    # via babel
+requests==2.13.0
+    # via sphinx
+six==1.10.0
+    # via sphinx
+snowballstemmer==1.2.1
+    # via sphinx
 sphinx-bootstrap-theme==0.4.14
+    # via -r requirements.in
 sphinx==1.5.5
-
-# The following packages are commented out because they are
-# considered to be unsafe in a requirements file:
-# setuptools                # via sphinx-bootstrap-theme
+    # via
+    #   -r requirements.in
+    #   sphinxcontrib-cldomain