fix_: broken image links (#81)

brought from https://github.com/vacp2p/rfc/tree/master/static/rfcs/2

vac/2/images/batch.msc

@@ -0,0 +1,14 @@
+# Alice and Bob: batch data sync
+msc {
+  hscale="2", wordwraparcs=on;
+
+  alice [label="Alice"],
+  bob [label="Bob"];
+
+  --- [label="batch data sync"];
+  alice => alice [label="add messages to payload state"];
+  alice >> bob [label="send payload with messages"];
+
+  bob => bob [label="add acks to payload state"];
+  bob >> alice [label="send payload with acks"];
+}

vac/2/images/interactive.msc

@@ -0,0 +1,20 @@
+# Alice and Bob: interactive data sync
+msc {
+  hscale="2", wordwraparcs=on;
+
+  alice [label="Alice"],
+  bob [label="Bob"];
+
+  --- [label="interactive data sync"];
+  alice => alice [label="add offers to payload state"];
+  alice >> bob [label="send payload with offers"];
+    
+  bob => bob [label="add requests to payload state"];
+  bob >> alice [label="send payload with requests"];
+  
+  alice => alice [label="add requested messages to state"];
+  alice >> bob [label="send payload with messages"];
+  
+  bob => bob [label="add acks to payload state"];
+  bob >> alice [label="send payload with acks"];
+}

vac/2/mvds.md

@@ -97,7 +97,7 @@ Nodes MAY have two modes with which they can send records: `BATCH` and `INTERACT
  - All records that require retransmission are added to the payload, given `Send Epoch` has been reached.
 
 <p align="center">
-    <img src="../assets/mvds/interactive.png" />
+    <img src="./images/interactive.png" />
     <br />
     Figure 1: Delivery without retransmissions in interactive mode.
 </p>
@@ -112,7 +112,7 @@ Nodes MAY have two modes with which they can send records: `BATCH` and `INTERACT
 <!-- diagram -->
 
 <p align="center">
-    <img src="../assets/mvds/batch.png" />
+    <img src="./images/batch.png" />
     <br />
     Figure 2: Delivery without retransmissions in batch mode.
 </p>