updated rust posts with ```rust md tag

content/post/2024-09-21-RustClass.md

@@ -14,7 +14,7 @@ tags: [
 </br>
 Following is the code for a very basic struct with accessors and mutators.
 
-```
+```rust
 struct MyStruct{
     word: String,
     number: i32

content/post/2024-09-21-RustTraits.md

@@ -21,7 +21,7 @@ In this scenario, I'm imagining that it's very importand to check if a number is
 the number seven. I can add a function to the "i32" and "u32" object. I would probably need to do this to i64 too, but 
 this isn't particularly exciting to reiterate in code below.
 
-```
+```rust
 trait Sevens {
     fn divisible_by_seven(&self) -> bool ;
     fn is_seven(&self) -> bool ;
@@ -39,7 +39,7 @@ impl Sevens for i32 {
 
 And if I want the same to work on u32, I can add this to the code: 
 
-```
+```rust
 impl Sevens for u32 {
     fn divisible_by_seven(&self) -> bool{
         self%7 == 0
@@ -54,7 +54,7 @@ And then main can be added (note, these are all in the same file at the moment a
 imported another file with a "use" declaration.
 
 
-```
+```rust
 fn main() {
     let x: i32 = 9;
     let y: u32 = 49;

content/post/2024-09-28-ImplFrom.md

@@ -12,7 +12,7 @@ tags: [
 # Implement "From" trait...
 
 Basic implementation of From trait to create "MyStruct" from<i32>
-```
+```rust
 struct MyStruct{
     word: String,
     number: i32