Fix local stylesheets by using correct theme naming.

.gitmodules

@@ -1,4 +1,4 @@
 [submodule "themes/pickles"]
-	path = themes/pickles
+	path = themes/hugo_theme_pickles
 	url = https://github.com/mismith0227/hugo_theme_pickles
 	branch = custom

config.toml

@@ -1,15 +1,15 @@
 baseurl = "https://annabunches.net/"
 languageCode = "en-us"
-theme = "pickles"
+theme = "hugo_theme_pickles"
 Title = "Anna and the Bunches"
-copyright = "© Anna Wiggins, 2006-2020"
+copyright = "© Anna Wiggins, 2006-2023"
 
 # Google Analytics API key.
 # googleAnalytics = "Your Google Analytics tracking id"
 
 [params]
   paginate = 10
-  custom_css = ["/css/custom.css"]
+  customCSS = ["/css/custom.css"]
   dateformat = "2006-02-01"
   # Social accounts. Link to these accounts are displayed in the header and
   # footer