fix: Fix deprecated warnings for language params

Fix site params and format rss.xml.

Command used to search and replace site params.

```bash
sed -i "s/site\.Copyright/site\.Params.Copyright/" layouts/**/*.html
```

Author: manid2

exampleSite/config/_default/config.toml

@@ -1,5 +1,6 @@
-baseurl = "https://manid2.github.io/hugo-xterm/"
+title = "Hugo Xterm"
 languageCode = "en-us"
+baseurl = "https://manid2.github.io/hugo-xterm/"
 paginate = 20
 canonifyurls = true
 
@@ -21,14 +22,9 @@ canonifyurls = true
   creator = "mani_d2"
 
 [languages]
-  [languages.en]
-    title = "Hugo Xterm"
+  [languages.en.params]
     copyright = "© Mani Kumar"
-    menuMore = "Show more"
-    readMore = "Read more"
     readOtherPosts = "Read other posts"
-    newerPosts = "Previous"
-    olderPosts = "Next"
     missingContentMessage = "Page not found..."
     missingBackButtonLabel = "Back to home page"
 

layouts/_default/rss.xml

@@ -1,40 +1,63 @@
 {{- $pctx := . -}}
-{{- if .IsHome -}}{{ $pctx = .Site }}{{- end -}}
+{{- if .IsHome -}}
+  {{ $pctx = .Site }}
+{{- end -}}
+
 {{- $pages := slice -}}
 {{- if or $.IsHome $.IsSection -}}
-{{- $pages = $pctx.RegularPages -}}
+  {{- $pages = $pctx.RegularPages -}}
 {{- else -}}
-{{- $pages = $pctx.Pages -}}
+  {{- $pages = $pctx.Pages -}}
 {{- end -}}
+
 {{- $limit := .Site.Config.Services.RSS.Limit -}}
 {{- if ge $limit 1 -}}
-{{- $pages = $pages | first $limit -}}
+  {{- $pages = $pages | first $limit -}}
 {{- end -}}
+
 {{- printf "<?xml version=\"1.0\" encoding=\"utf-8\" standalone=\"yes\"?>" | safeHTML }}
 <rss version="2.0" xmlns:atom="http://www.w3.org/2005/Atom">
   <channel>
     <title>{{ if eq  .Title  .Site.Title }}{{ .Site.Title }}{{ else }}{{ with .Title }}{{.}} on {{ end }}{{ .Site.Title }}{{ end }}</title>
     <link>{{ .Permalink }}</link>
     <description>Recent content {{ if ne  .Title  .Site.Title }}{{ with .Title }}in {{.}} {{ end }}{{ end }}on {{ .Site.Title }}</description>
-    <generator>Hugo -- gohugo.io</generator>{{ with .Site.LanguageCode }}
-    <language>{{.}}</language>{{end}}{{ with .Site.Author.email }}
-    <managingEditor>{{.}}{{ with $.Site.Author.name }} ({{.}}){{end}}</managingEditor>{{end}}{{ with .Site.Author.email }}
-    <webMaster>{{.}}{{ with $.Site.Author.name }} ({{.}}){{end}}</webMaster>{{end}}{{ with .Site.Copyright }}
-    <copyright>{{.}}</copyright>{{end}}{{ if not .Date.IsZero }}
-    <lastBuildDate>{{ .Date.Format "Mon, 02 Jan 2006 15:04:05 -0700" | safeHTML }}</lastBuildDate>{{ end }}
+    <generator>Hugo -- gohugo.io</generator>
+
+    {{- with .Site.LanguageCode }}
+      <language>{{.}}</language>
+    {{- end }}
+
+    {{- with .Site.Author.email }}
+      <managingEditor>{{.}}{{with $.Site.Author.name}} ({{.}}){{end}}</managingEditor>
+      <webMaster>{{.}}{{with $.Site.Author.name}} ({{.}}){{end}}</webMaster>
+    {{- end}}
+
+    {{- with .Site.Params.Copyright }}
+      <copyright>{{.}}</copyright>
+    {{- end}}
+
+    {{- if not .Date.IsZero }}
+      <lastBuildDate>{{ .Date.Format "Mon, 02 Jan 2006 15:04:05 -0700" | safeHTML }}</lastBuildDate>
+    {{- end }}
+
     {{- with .OutputFormats.Get "RSS" -}}
-    {{ printf "<atom:link href=%q rel=\"self\" type=%q />" .Permalink .MediaType | safeHTML }}
+      {{ printf "<atom:link href=%q rel=\"self\" type=%q />" .Permalink .MediaType | safeHTML }}
     {{- end -}}
-    {{ range $pages }}
+
+    {{- range $pages }}
     <item>
       <title>{{ .Title }}</title>
       <link>{{ .Permalink }}</link>
       <pubDate>{{ .Date.Format "Mon, 02 Jan 2006 15:04:05 -0700" | safeHTML }}</pubDate>
-      {{ with .Site.Author.email }}<author>{{.}}{{ with $.Site.Author.name }} ({{.}}){{end}}</author>{{end}}
+
+      {{- with .Site.Author.email }}
+        <author>{{.}}{{ with $.Site.Author.name }} ({{.}}){{end}}</author>
+      {{- end}}
+
       <guid>{{ .Permalink }}</guid>
       <description>{{ .Summary | html }}</description>
       <content>{{ .Content | html }}</content>
     </item>
-    {{ end }}
+    {{- end }}
   </channel>
 </rss>

layouts/partials/footer.html

@@ -23,8 +23,8 @@
 {{- /* site copyright */}}
 <div class="copyright">
   <p>
-    {{- if site.Copyright -}}
-      {{ site.Copyright | safeHTML }}
+    {{- if site.Params.Copyright -}}
+      {{ site.Params.Copyright | safeHTML }}
       {{ now.Year }}
     {{- end -}}