chore: fix certain uninlined string format uses (#1310)

* Fixed uninlined args

First ran this, and fixed a few more similar issues by hand

```
cargo clippy --workspace --fix --benches --tests --bins -- -A clippy::all -W clippy::uninlined_format_args
```

Note that in a few cases, format args were passed by ref - which is actually a tiny perf hit - compiler would not be able to optimize them.

* revert change here

since it contains a non-inlineable variable I'm not a fan of using it partially here

* revert

given the other formats above/below I would prefer keeping it like this

---------

Co-authored-by: Clement Tsang <34804052+ClementTsang@users.noreply.github.com>

src/widgets/disk_table.rs

@@ -69,7 +69,7 @@ impl DiskWidgetData {
 
     pub fn free_percent_string(&self) -> KString {
         match self.free_percent() {
-            Some(val) => format!("{:.1}%", val).into(),
+            Some(val) => format!("{val:.1}%").into(),
             None => "N/A".into(),
         }
     }
@@ -90,7 +90,7 @@ impl DiskWidgetData {
 
     pub fn used_percent_string(&self) -> KString {
         match self.used_percent() {
-            Some(val) => format!("{:.1}%", val).into(),
+            Some(val) => format!("{val:.1}%").into(),
             None => "N/A".into(),
         }
     }

src/widgets/process_table/proc_widget_data.rs

@@ -101,7 +101,7 @@ impl PartialOrd for MemUsage {
 impl Display for MemUsage {
     fn fmt(&self, f: &mut std::fmt::Formatter<'_>) -> std::fmt::Result {
         match self {
-            MemUsage::Percent(percent) => f.write_fmt(format_args!("{:.1}%", percent)),
+            MemUsage::Percent(percent) => f.write_fmt(format_args!("{percent:.1}%")),
             MemUsage::Bytes(bytes) => f.write_str(&binary_byte_string(*bytes)),
         }
     }