update

UltiSnips/markdown.snippets

@@ -1,8 +1,21 @@
-snippet ln "[...](...)"
-[$1]($2)
+snippet l "[...](...)"
+[${1:title}](${2:url})
 endsnippet
 
-snippet cd "``` ..."
+snippet c "``` ..."
 \`\`\`$0
 \`\`\`
 endsnippet
+
+# latex
+snippet vc "vector"
+\\begin{bmatrix} $1 \\\\ $2 \\end{bmatrix}
+endsnippet
+
+snippet mx "matrix"
+\\begin{bmatrix} $1 & $2 \\\\ $3 & $4 \\end{bmatrix}
+endsnippet
+
+snippet lmb "lambda" i
+\\lambda $0
+endsnippet