[Sibiu-2026] update prospect name

Author: Ovijmek21

content/events/2026-sibiu/sponsor.md

@@ -66,7 +66,7 @@ We love surprising our participants, and we especially love it when our sponsors
 </p>
 
 <div align="center" style="margin-top: 2rem; margin-bottom: 2rem;">
-  <a href="/events/2026-sibiu/Sponsorship_Prospectus_DevOpsDaysSibiu2026.pdf"
+  <a href="/events/2026-sibiu/sponsorship-prospectus-dev-ops-days-sibiu-2026.pdf"
      target="_blank"
      style="display: inline-block; padding: 20px 40px; background-color: #4a90d9; color: white; text-decoration: none; border-radius: 10px; font-weight: 700; font-size: 1.5rem;">
     → → → Download Sponsorship Prospectus ← ← ←

content/events/2026-sibiu/welcome.md

@@ -144,7 +144,7 @@ With a welcoming code of conduct and a vibrant, respectful atmosphere, devopsday
 ## 💼 Become a Sponsor
 
 <div align="center" style="margin-top: 2rem; margin-bottom: 2rem;">
-  <a href="/events/2026-sibiu/Sponsorship_Prospectus_DevOpsDaysSibiu2026.pdf"
+  <a href="/events/2026-sibiu/sponsorship-prospectus-dev-ops-days-sibiu-2026.pdf"
    target="_blank"
    style="display: inline-block; padding: 20px 40px; background-color: #4a90d9; color: white; text-decoration: none; border-radius: 10px; font-weight: 700; font-size: 1.5rem;">
   → → → Download Sponsorship Prospectus ← ← ←