doc: backticks around Lean code in docstrings (#5538)

Minor docstrings tweaks on the basis of #5497

src/Init/Data/Float.lean

@@ -73,33 +73,33 @@ instance floatDecLe (a b : Float) : Decidable (a ≤ b) := Float.decLe a b
 
 @[extern "lean_float_to_string"] opaque Float.toString : Float → String
 /-- If the given float is non-negative, truncates the value to the nearest non-negative integer.
-If negative or NaN, returns 0.
-If larger than the maximum value for UInt8 (including Inf), returns maximum value of UInt8
-(i.e. UInt8.size - 1).
+If negative or NaN, returns `0`.
+If larger than the maximum value for `UInt8` (including Inf), returns the maximum value of `UInt8`
+(i.e. `UInt8.size - 1`).
 -/
 @[extern "lean_float_to_uint8"] opaque Float.toUInt8 : Float → UInt8
 /-- If the given float is non-negative, truncates the value to the nearest non-negative integer.
-If negative or NaN, returns 0.
-If larger than the maximum value for UInt16 (including Inf), returns maximum value of UInt16
-(i.e. UInt16.size - 1).
+If negative or NaN, returns `0`.
+If larger than the maximum value for `UInt16` (including Inf), returns the maximum value of `UInt16`
+(i.e. `UInt16.size - 1`).
 -/
 @[extern "lean_float_to_uint16"] opaque Float.toUInt16 : Float → UInt16
 /-- If the given float is non-negative, truncates the value to the nearest non-negative integer.
-If negative or NaN, returns 0.
-If larger than the maximum value for UInt32 (including Inf), returns maximum value of UInt32
-(i.e. UInt32.size - 1).
+If negative or NaN, returns `0`.
+If larger than the maximum value for `UInt32` (including Inf), returns the maximum value of `UInt32`
+(i.e. `UInt32.size - 1`).
 -/
 @[extern "lean_float_to_uint32"] opaque Float.toUInt32 : Float → UInt32
 /-- If the given float is non-negative, truncates the value to the nearest non-negative integer.
-If negative or NaN, returns 0.
-If larger than the maximum value for UInt64 (including Inf), returns maximum value of UInt64
-(i.e. UInt64.size - 1).
+If negative or NaN, returns `0`.
+If larger than the maximum value for `UInt64` (including Inf), returns the maximum value of `UInt64`
+(i.e. `UInt64.size - 1`).
 -/
 @[extern "lean_float_to_uint64"] opaque Float.toUInt64 : Float → UInt64
 /-- If the given float is non-negative, truncates the value to the nearest non-negative integer.
-If negative or NaN, returns 0.
-If larger than the maximum value for USize (including Inf), returns maximum value of USize
-(i.e. USize.size - 1;  Note that this value is platform dependent).
+If negative or NaN, returns `0`.
+If larger than the maximum value for `USize` (including Inf), returns the maximum value of `USize`
+(i.e. `USize.size - 1`). This value is platform dependent).
 -/
 @[extern "lean_float_to_usize"] opaque Float.toUSize : Float → USize