doc: make -f Makefile.doc (#2919)

mechanical change: create the manual pages.

Signed-off-by: Miek Gieben <miek@miek.nl>

man/coredns-pprof.7

@@ -1,11 +1,11 @@
 .\" Generated by Mmark Markdown Processer - mmark.nl
-.TH "COREDNS-PPROF" "7" "April 2019" "CoreDNS" "CoreDNS Plugins"
+.TH "COREDNS-PPROF" 7 "June 2019" "CoreDNS" "CoreDNS Plugins"
 
-.SH NAME
+.SH "NAME"
 .PP
 \fIpprof\fP - publishes runtime profiling data at endpoints under \fB\fC/debug/pprof\fR.
 
-.SH DESCRIPTION
+.SH "DESCRIPTION"
 .PP
 You can visit \fB\fC/debug/pprof\fR on your site for an index of the available endpoints. By default it
 will listen on localhost:6053.
@@ -17,7 +17,7 @@ you use pprof on a live server, consider restricting access or enabling it only
 .PP
 This plugin can only be used once per Server Block.
 
-.SH SYNTAX
+.SH "SYNTAX"
 .PP
 .RS
 
@@ -53,7 +53,7 @@ runtime.SetBlockProfileRate
 profiling entails.
 
 
-.SH EXAMPLES
+.SH "EXAMPLES"
 .PP
 Enable a pprof endpoint:
 
@@ -101,7 +101,7 @@ Listen on an all addresses on port 6060, and enable block profiling
 .fi
 .RE
 
-.SH ALSO SEE
+.SH "ALSO SEE"
 .PP
 See Go's pprof documentation
 \[la]https://golang.org/pkg/net/http/pprof/\[ra] and Profiling Go