Documentation/contributing/gsoc: Fix formatting

Fix formatting when text should be bold.

Change-Id: I7a88ddc0a56dba8c05d0997f37121d0f2cc84ce6
Signed-off-by: Felix Singer <felixsinger@posteo.net>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/62204
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Felix Held <felix-coreboot@felixheld.de>
Reviewed-by: Michael Niewöhner <foss@mniewoehner.de>
diff --git a/Documentation/contributing/gsoc.md b/Documentation/contributing/gsoc.md
index 049c80a..17f31893 100644
--- a/Documentation/contributing/gsoc.md
+++ b/Documentation/contributing/gsoc.md
@@ -141,7 +141,7 @@
 service. You risk automatically failing if your mentor cannot contact you and if
 you cannot provide updates according to GSoC deadlines.
 
-** Personal Information **
+**Personal Information**
 
   * Name
 
@@ -158,7 +158,7 @@
   * What are your other time commitments? Do you have a job, classes, vacations?
     When and how long?
 
-** Software experience **
+**Software experience**
 
 If applicable, please provide the following information:
 
@@ -176,7 +176,7 @@
   * What was your experience while building and running coreboot? Did you have
     problems?
 
-** Your project **
+**Your project**
 
   * Provide an overview of your project (in your own words).
 
@@ -191,7 +191,7 @@
 
   * Do you have a stretch goal?
 
-** Other **
+**Other**
 
   * Resume (optional)