Add modules.d layout to getting started and fix Windows command examp…

…les (elastic#6941)

Fixes elastic#5512 and elastic#6196

I've also changed the metricbeat getting started to use asciidoc attributes to resolve "metricbeat" and "Metricbeat". My goal is to convert all the topics over to using attributes, but I don't want to open a big PR for those changes because it's easier for me to check for mistakes if I make the changes in smaller batches.

libbeat/docs/dashboards.asciidoc

@@ -18,7 +18,7 @@ command (as described here) or
 +{beatname_lc}.yml+ config file.
 
 This requires a Kibana endpoint configuration. If you didn't already configure
-a Kibana endpoint, see <<{beatname_lc}-configuration,configured {beatname_uc}>> 
+a Kibana endpoint, see <<{beatname_lc}-configuration,configure {beatname_uc}>>. 
 
 Make sure Kibana is running before you perform this step. If you are accessing a
 secured Kibana instance, make sure you've configured credentials as described in
@@ -75,9 +75,9 @@ and select *Run As Administrator*).
 From the PowerShell prompt, change to the directory where you installed {beatname_uc},
 and run:
 
-["source","sh",subs="attributes,callouts"]
+["source","sh",subs="attributes"]
 ----------------------------------------------------------------------
-PS > {beatname_lc} setup --dashboards
+PS > .{backslash}{beatname_lc}.exe setup --dashboards
 ----------------------------------------------------------------------
 
 ifndef::only-elasticsearch[]

libbeat/docs/shared-configuring.asciidoc

@@ -8,6 +8,6 @@ There’s also a full example configuration file called +{beatname_lc}.reference
 that shows all non-deprecated options.
 endif::[]
 
-See the
+TIP: See the
 {libbeat}/config-file-format.html[Config File Format] section of the
 _Beats Platform Reference_ for more about the structure of the config file.

libbeat/docs/shared-template-load.asciidoc

@@ -177,9 +177,9 @@ and select *Run As Administrator*).
 From the PowerShell prompt, change to the directory where you installed {beatname_uc},
 and run:
 
-["source","sh",subs="attributes,callouts"]
+["source","sh",subs="attributes"]
 ----------------------------------------------------------------------
-PS > .{backslash}{beatname_lc} setup --template{disable_logstash} -E 'output.elasticsearch.hosts=["localhost:9200"]'
+PS > .{backslash}{beatname_lc}.exe setup --template{disable_logstash} -E 'output.elasticsearch.hosts=["localhost:9200"]'
 ----------------------------------------------------------------------
 
 
@@ -234,12 +234,12 @@ ifdef::allplatforms[]
 ./{beatname_lc} export template > {beatname_lc}.template.json
 ----
 +
-*win*:
+*win:*
 +
 endif::allplatforms[]
 ["source","sh",subs="attributes"]
 ----
-PS> .{backslash}{beatname_lc}.exe export template --es.version {stack-version} | Out-File -Encoding UTF8 {beatname_lc}.template.json
+PS > .{backslash}{beatname_lc}.exe export template --es.version {stack-version} | Out-File -Encoding UTF8 {beatname_lc}.template.json
 ----
 
 . Install the template:
@@ -251,7 +251,7 @@ PS> .{backslash}{beatname_lc}.exe export template --es.version {stack-version} |
 curl -XPUT -H 'Content-Type: application/json' http://localhost:9200/_template/{beatname_lc}-{stack-version} -d@{beatname_lc}.template.json
 ----
 +
-*win*:
+*win:*
 +
 ["source","sh",subs="attributes"]
 ----