Add missing line break indicators for GitHub Flavored Markdown

Author: NBickford-NV

landing/siggraph-25/index.md

@@ -8,7 +8,7 @@ The latest release of Slang for SIGGRAPH can be found here https://github.com/sh
 
 ## [Hands-On Class: Introduction to Slang](https://s2025.conference-schedule.org/?post_type=page&p=14&id=gensubcur_104&sess=sess287)
 
-**Sunday, August 10, 4:00-5:30 PM PDT**
+**Sunday, August 10, 4:00-5:30 PM PDT**  
 **West Building, Rooms 121-122**
 
 Join us for an introductory lab for the Slang shading language, covering topics from language basics to advanced features like generics and automatic analytical derivatives.
@@ -17,7 +17,7 @@ We'll also have a few small projects and coding puzzles so you can try out what
 
 You can also download the full lab materials and slides below!
 
-[Lab materials with slides »](https://developer.download.nvidia.com/ProGraphics/nvpro-samples/SlangLab/Lab.zip)
+[Lab materials with slides »](https://developer.download.nvidia.com/ProGraphics/nvpro-samples/SlangLab/Lab.zip)  
 [Slides only »](https://developer.download.nvidia.com/ProGraphics/nvpro-samples/SlangLab/Slides.pdf)
 
 [![Two slides from the Introduction to Slang lab. On the left is the title slide. On the right is a screenshot of vk_slang_editor and the course's agenda: language basics, using slangc, porting GLSL, shader I/O, debugging and tools, structs, modules, interfaces, SlangPy, and autodifferentiation.](intro-to-slang.webp)](https://developer.download.nvidia.com/ProGraphics/nvpro-samples/SlangLab/Slides.pdf)