fix image on C landing page to use correct size (#173)

* fix image

* CC comment

Author: rustagir

source/languages/c.txt

@@ -16,7 +16,7 @@ MongoDB with C
    .. button:: Get started with the MongoDB C Driver
       :uri: https://www.mongodb.com/docs/languages/c/c-driver/current/
 
-.. image:: /languages/images/c.svg
+.. image:: /languages/images/C.svg
    :alt: C landing page hero image
 
 Drivers
@@ -47,7 +47,7 @@ connects your C application to MongoDB.
 
       Provides an API for working with MongoDB databases consistent with other MongoDB language drivers.
 
-More ways to learn
+More Ways to Learn
 ------------------
 
 .. card-group::
@@ -68,7 +68,7 @@ More ways to learn
       :icon: /images/icons/university.svg
       :icon-alt: Learn icon
 
-      Getting Started with the C Driver Course →
+      Learn about C and MongoDB →
 
    .. card::
       :headline: Join forums and discussions