Updates README-en.md

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README-en.md

@@ -162,9 +162,9 @@ Here `var2` is initialized to 5 and `var3` to 10.
 
 **Examples of Invalid Function Headers:**
 
-1. `int example(int var1=1, float var2, int var3)` This header is invalid because the default values can only be assigned starting from the rightmost parameter.
+1. `int example(int var1 = 1, float var2, int var3)` This header is invalid because the default values can only be assigned starting from the rightmost parameter.
 
-2. `int example(int var1=1, float var2, int var3=10)` This header is invalid because you can't place parameters without values between other parameters with default values. In this case, `var2` doesn't have a default value but `var1` and `var3` do.
+2. `int example(int var1 = 1, float var2, int var3 = 10)` This header is invalid because you can't place parameters without values between other parameters with default values. In this case, `var2` doesn't have a default value but `var1` and `var3` do.
 
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