Fix disabling navbar logo

Previously, even if `navbar.showBrandLogo` was set to false, the navbar
logo would be shown.

Signed-off-by: Marek Pikuła <marek@serenitycode.dev>

layouts/partials/sections/header.html

@@ -40,7 +40,7 @@
         if(resetHeaderStyle) {
             profileHeaderElem.classList.remove("showHeaderOnTop");
         }
-        prevScrollPos = currentScrollPos;        
+        prevScrollPos = currentScrollPos;
     });
 </script>
 {{ end }}
@@ -51,7 +51,7 @@
         <div class="container-fluid mx-xs-2 mx-sm-5 mx-md-5 mx-lg-5">
             <!-- navbar brand -->
             <a class="navbar-brand primary-font text-wrap" href="{{ .Site.BaseURL | relURL }}">
-                {{ if and (or (.Site.Params.favicon) (.Site.Params.navbar.brandLogo)) .Site.Params.navbar.showBrandLogo | default true }}
+                {{ if and (or (.Site.Params.favicon) (.Site.Params.navbar.brandLogo)) (.Site.Params.navbar.showBrandLogo | default true) }}
                 <img src="{{ .Site.Params.navbar.brandLogo | default .Site.Params.favicon }}" width="30" height="30"
                     class="d-inline-block align-top">
                 {{ .Site.Params.navbar.brandName | default .Site.Params.title }}