_content/doc/tutorial/generics: add indentation inside function

Change-Id: I5648e2da0b708bf35e4406f4dcb49eabe01abf92
GitHub-Last-Rev: 009bc861a38bb5b8b180d11c1cfc569d17a00059
GitHub-Pull-Request: golang/website#122
Reviewed-on: https://go-review.googlesource.com/c/website/+/381917
Reviewed-by: DO NOT USE <iant@google.com>
Trust: Cherry Mui <cherryyz@google.com>
diff --git a/_content/doc/tutorial/generics.md b/_content/doc/tutorial/generics.md
index 2c1b5ff..8220417 100644
--- a/_content/doc/tutorial/generics.md
+++ b/_content/doc/tutorial/generics.md
@@ -173,21 +173,21 @@
 
     ```
     func main() {
-    // Initialize a map for the integer values
-    ints := map[string]int64{
-    	"first": 34,
-    	"second": 12,
-    }
+    	// Initialize a map for the integer values
+    	ints := map[string]int64{
+    		"first":  34,
+    		"second": 12,
+    	}
 
-    // Initialize a map for the float values
-    floats := map[string]float64{
-    	"first": 35.98,
-    	"second": 26.99,
-    }
+    	// Initialize a map for the float values
+    	floats := map[string]float64{
+    		"first":  35.98,
+    		"second": 26.99,
+    	}
 
-    fmt.Printf("Non-Generic Sums: %v and %v\n",
-    	SumInts(ints),
-    	SumFloats(floats))
+    	fmt.Printf("Non-Generic Sums: %v and %v\n",
+    		SumInts(ints),
+    		SumFloats(floats))
     }
     ```