Merge pull request scala#5941 from estsauver/spec_fix

Fix incorrect mathjax rendering in spec section 2

spec/02-identifiers-names-and-scopes.md

@@ -105,24 +105,24 @@ precedences between them.
 package p {                   // `X' bound by package clause
 import Console._              // `println' bound by wildcard import
 object Y {
-  println(s"L4: $X")          // `X' refers to `p.X' here
+  println(s"L4: \$X")          // `X' refers to `p.X' here
   locally {
     import q._                // `X' bound by wildcard import
-    println(s"L7: $X")        // `X' refers to `q.X' here
+    println(s"L7: \$X")        // `X' refers to `q.X' here
     import X._                // `x' and `y' bound by wildcard import
-    println(s"L9: $x")        // `x' refers to `q.X.x' here
+    println(s"L9: \$x")        // `x' refers to `q.X.x' here
     locally {
       val x = 3               // `x' bound by local definition
-      println(s"L12: $x")     // `x' refers to constant `3' here
+      println(s"L12: \$x")     // `x' refers to constant `3' here
       locally {
         import q.X._          // `x' and `y' bound by wildcard import
-//      println(s"L15: $x")   // reference to `x' is ambiguous here
+//      println(s"L15: \$x")   // reference to `x' is ambiguous here
         import X.y            // `y' bound by explicit import
-        println(s"L17: $y")   // `y' refers to `q.X.y' here
+        println(s"L17: \$y")   // `y' refers to `q.X.y' here
         locally {
           val x = "abc"       // `x' bound by local definition
           import p.X._        // `x' and `y' bound by wildcard import
-//        println(s"L21: $y") // reference to `y' is ambiguous here
-          println(s"L22: $x") // `x' refers to string "abc" here
+//        println(s"L21: \$y") // reference to `y' is ambiguous here
+          println(s"L22: \$x") // `x' refers to string "abc" here
 }}}}}}
 ```