doc: remove trailing white spaces

doc/Makefile.am

@@ -30,7 +30,7 @@ AM_V_SPHINX = $(AM_V_SPHINX_@AM_V@)
 AM_V_SPHINX_ = $(AM_V_SPHINX_@AM_DEFAULT_V@)
 AM_V_SPHINX_0 = @echo "  SPHINX   $@";
 
-AM_V_ECHO = @sh -c 'if $(AM_V_P); then echo $$1; fi' -- 
+AM_V_ECHO = @sh -c 'if $(AM_V_P); then echo $$1; fi' --
 
 SPHINXBUILDDIR = $(builddir)/_build
 
@@ -55,7 +55,7 @@ man_SPHINXOPTS = $(_SPHINXOPTS) \
 
 .PHONY: html-local singlehtml pdf-local info-local man install-html-local install-singlehtml install-pdf-local install-info-local
 
-man_MANS = 
+man_MANS =
 
 if HAVE_DAEMON
 man_MANS += man/knot.conf.5 man/knotc.8 man/knotd.8
@@ -86,7 +86,6 @@ man_SUBST = $(AM_V_GEN)mkdir -p man; sed -e 's,[@]VERSION@,$(VERSION),' -e 's,[@
 .8in.8:
 	$(man_SUBST)
 
-
 if HAVE_DOCS
 
 if HAVE_SPHINXBUILD

doc/conf.py

@@ -87,7 +87,6 @@ pygments_style = 'sphinx'
 # A list of ignored prefixes for module index sorting.
 #modindex_common_prefix = []
 
-
 # -- Options for HTML output ---------------------------------------------------
 
 # The theme to use for HTML and HTML Help pages.  See the documentation for
@@ -167,7 +166,6 @@ html_use_index = False
 # Output file base name for HTML help builder.
 htmlhelp_basename = 'KnotDNSdoc'
 
-
 # -- Options for LaTeX output --------------------------------------------------
 
 latex_elements = {
@@ -213,7 +211,6 @@ latex_logo = 'logo.eps'
 # If false, no module index is generated.
 latex_domain_indices = False
 
-
 # -- Options for manual page output --------------------------------------------
 
 # One entry per manual page. List of tuples
@@ -233,7 +230,6 @@ man_pages = [
 # If true, show URL addresses after external links.
 #man_show_urls = False
 
-
 # -- Options for Texinfo output ------------------------------------------------
 
 # Grouping the document tree into Texinfo files. List of tuples

doc/man_kdig.rst

@@ -75,9 +75,9 @@ Options
   Set the query name. An explicit variant of *name* specification.
 
 **-t** *type*
-  Set the query type (e.g. NS, IXFR=12345, TYPE65535, NOTIFY). An explicit 
-  variant of *type* specification. The default type is A. IXFR type requires 
-  SOA serial parameter. NOTIFY type without SOA serial parameter causes pure 
+  Set the query type (e.g. NS, IXFR=12345, TYPE65535, NOTIFY). An explicit
+  variant of *type* specification. The default type is A. IXFR type requires
+  SOA serial parameter. NOTIFY type without SOA serial parameter causes pure
   NOTIFY message without any SOA hint.
 
 **-V**, **--version**

doc/man_khost.rst

@@ -24,7 +24,7 @@ Parameters
 
 *server*
   Is a name or an address of the nameserver to send a query to.  The address
-  can be specified using [address]:port notation. If no server is specified, 
+  can be specified using [address]:port notation. If no server is specified,
   the servers from :file:`/etc/resolv.conf` are used.
 
 If no arguments are provided, :program:`khost` prints a short help.

doc/man_knotc.rst

@@ -54,7 +54,6 @@ Actions
 **reload**
   Reload the server configuration and modified zone files.
 
-
 **zone-check** [*zone*...]
   Test if the server can load the zone. Semantic checks are executed if enabled
   in the configuration. (*)
@@ -85,7 +84,6 @@ Actions
   Trigger a DNSSEC re-sign of the zone. Existing signatures will be dropped.
   This command is valid for zones with automatic DNSSEC signing.
 
-
 **conf-init**
   Initialize the configuration database. (*)