put back asset form ref for now

Author: hypha

src/content/pages/sponsorship/information.mdx

@@ -281,7 +281,7 @@ Check out the [2024 Job Board](https://ep2024.europython.eu/job-board) to get an
 
 **Deadline** for submitting job postings for the website: **TBD, 2025**
 
-**Submission Channel**: TBD
+**Submission Channel**: [Sponsor Assets Submission Form](TBD)
 
 ### Job Posting on EuroPython Blog
 
@@ -290,7 +290,7 @@ You may either use the same posting submitted for the job board on the website o
 
 **Deadline for submitting job postings for the EuroPython Blog**: **TBD, 2025**
 
-**Submission Channel**: TBD
+**Submission Channel**: [Sponsor Assets Submission Form](TBD)
 
 ### On-site Job Board
 
@@ -367,7 +367,7 @@ We recommend **2 to 10** files. Higher sponsorship levels will receive more ad s
 
 **Deadline** for submitting video ad links: **TBD, 2025**
 
-**Submission Channel**: TBD
+**Submission Channel**: [Sponsor Assets Submission Form](TBD)
 
 ### Technical Study Blog Post
 
@@ -499,4 +499,4 @@ Content purely focused on general product promotion may not be suitable for our
 
 **Deadline** for submitting the YouTube short video: **TBD, 2025**
 
-**Submission Channel**: TBD
+**Submission Channel**: **[Sponsor Assets Submission Form](TBD)**