fix documentation errors

docs/Makefile

@@ -3,7 +3,7 @@
 
 # You can set these variables from the command line.
 SPHINXOPTS    =
-SPHINXBUILD   = sphinx-build
+SPHINXBUILD   = sphinx-build-3
 SPHINXPROJ    = j2static
 SOURCEDIR     = .
 BUILDDIR      = _build

docs/conf.py

@@ -83,7 +83,7 @@ todo_include_todos = False
 # The theme to use for HTML and HTML Help pages.  See the documentation for
 # a list of builtin themes.
 #
-html_theme = 'alabaster'
+html_theme = 'classic'
 
 # Theme options are theme-specific and customize the look and feel of a theme
 # further.  For a list of options available for each theme, see the

docs/index.rst

@@ -10,7 +10,8 @@ Welcome to j2static's documentation!
    :maxdepth: 2
    :caption: Contents:
 
-
+   merge.rst
+   generate.rst
 
 Indices and tables
 ==================

docs/merge.rst

 j2merge
 ====================================
 
-j2merge is a command line utilty that ships with j2static. It is a system for
- generating a set of documents from a template and a set of source data ('mail
-merge').
+j2merge is a command line utilty that ships with j2static. It is a system for generating a set of documents from a template and a set of source data ('mail merge').
 
 Using the tool
 --------------