Fix broken image in Tech Library lab README.md files (#100)

* fix broken image link

* update shortcuts image size

Author: mitchv85

labs/techlib-eos-tips/README.md

@@ -62,7 +62,7 @@ Additional information related to navigating the Topology Viewer UI can be found
 <figure>
     <img src="assets/images/topo-shortcuts.png"
          alt="Topology Viewer"
-         width="250">
+         width="300">
 </figure>
 
 Happy Labbing! 🥳🧪

labs/techlib-eos-tips/assets/images/topo-extension.png

@@ -64,7 +64,7 @@ Additional information related to navigating the Topology Viewer UI can be found
 <figure>
     <img src="assets/images/topo-shortcuts.png"
          alt="Topology Viewer"
-         width="250">
+         width="300">
 </figure>
 
 Happy Labbing! 🥳🧪

labs/techlib-rcf-quickstart/README.md

@@ -72,7 +72,7 @@ Additional information related to navigating the Topology Viewer UI can be found
 <figure>
     <img src="assets/images/topo-shortcuts.png"
          alt="Topology Viewer"
-         width="250">
+         width="300">
 </figure>
 
 ### AVD

labs/techlib-rcf-quickstart/assets/images/topo-extension.png

@@ -72,7 +72,7 @@ Additional information related to navigating the Topology Viewer UI can be found
 <figure>
     <img src="assets/images/topo-shortcuts.png"
          alt="Topology Viewer"
-         width="250">
+         width="300">
 </figure>
 
 ### AVD

labs/techlib-vxlan-domain-a/README.md

@@ -71,7 +71,7 @@ Additional information related to navigating the Topology Viewer UI can be found
 <figure>
     <img src="assets/images/topo-shortcuts.png"
          alt="Topology Viewer"
-         width="250">
+         width="300">
 </figure>
 
 <!-- ### AVD