Update rule 3.3

Added overclaim town splitting

src/docs/rules.mdx

@@ -116,6 +116,8 @@ Creating claim arms extending from towns is not allowed. These are protrusions w
 
 Towns are not allowed to have areas of unclaimed chunks inside of their borders, as this can substantially increase the size of a town without them actually having to increase their claim limit legitimately.
 
+Towns are also not allowed to overclaim another town's chunks in a way which would split the overclaimed town into two segments. Any overclaim of chunks must leave the overclaimed town as a solid contiguous whole.
+
 Towns which are clearly created for no other reason than with the intent to block an existing town will also be removed. 
 
 ### 3.4 Stealing specific blocks