Reorganize info modal header with personal touch

Changes:
- Switched order: 'About this CV' now first, then CV title
- Changed format to 'CV 2025 - {JAMR}' (braces only around JAMR)
- Added subtitle 'Built by myself' / 'Construido por mí mismo'
- Adjusted spacing and styling for new hierarchy
- Subtitle is italic, gray, and smaller font size
- More personal and authentic presentation

templates/index.html

@@ -297,8 +297,9 @@
             </button>
 
             <div class="info-modal-header">
-                <div class="info-modal-cv-title">{CV {{.CurrentYear}} - JAMR}</div>
                 <h2>{{if eq .Lang "es"}}Acerca de este CV{{else}}About this CV{{end}}</h2>
+                <div class="info-modal-cv-title">CV {{.CurrentYear}} - {JAMR}</div>
+                <div class="info-modal-subtitle">{{if eq .Lang "es"}}Construido por mí mismo{{else}}Built by myself{{end}}</div>
             </div>
 
             <div class="info-modal-body">