Corrected doc PR fixes

Author: ThibsG

clippy_lints/src/drop_bounds.rs

@@ -29,7 +29,7 @@ declare_clippy_lint! {
     /// ```
     /// Could be written as:
     /// ```rust
-    /// fn foo() {}
+    /// fn foo<T>() {}
     /// ```
     pub DROP_BOUNDS,
     correctness,

clippy_lints/src/eta_reduction.rs

@@ -30,7 +30,7 @@ declare_clippy_lint! {
     /// xs.map(|x| foo(x))
     ///
     /// // Good
-    /// foo(xs)
+    /// xs.map(foo)
     /// ```
     /// where `foo(_)` is a plain function that takes the exact argument type of
     /// `x`.

clippy_lints/src/eval_order_dependence.rs

@@ -30,8 +30,11 @@ declare_clippy_lint! {
     /// // Unclear whether a is 1 or 2.
     ///
     /// // Good
-    /// x = 1;
-    /// let a = 1 + x;
+    /// let tmp = {
+    ///     x = 1;
+    ///     1
+    /// };
+    /// let a = tmp + x;
     /// ```
     pub EVAL_ORDER_DEPENDENCE,
     complexity,

clippy_lints/src/fallible_impl_from.rs

@@ -18,7 +18,7 @@ declare_clippy_lint! {
     /// **Known problems:** None.
     ///
     /// **Example:**
-    /// ```rust,ignore
+    /// ```rust
     /// struct Foo(i32);
     ///
     /// // Bad
@@ -27,13 +27,21 @@ declare_clippy_lint! {
     ///         Foo(s.parse().unwrap())
     ///     }
     /// }
+    /// ```
     ///
+    /// ```rust
     /// // Good
+    /// struct Foo(i32);
+    ///
     /// use std::convert::TryFrom;
     /// impl TryFrom<String> for Foo {
     ///     type Error = ();
     ///     fn try_from(s: String) -> Result<Self, Self::Error> {
-    ///         s.parse()
+    ///         if let Ok(parsed) = s.parse() {
+    ///             Ok(Foo(parsed))
+    ///         } else {
+    ///             Err(())
+    ///         }
     ///     }
     /// }
     /// ```

clippy_lints/src/functions.rs

@@ -52,7 +52,7 @@ declare_clippy_lint! {
     /// ```rust
     /// fn im_too_long() {
     ///     println!("");
-    /// // ... 100 more LoC
+    ///     // ... 100 more LoC
     ///     println!("");
     /// }
     /// ```

clippy_lints/src/methods/mod.rs

@@ -436,7 +436,11 @@ declare_clippy_lint! {
     /// vec.iter().filter(|x| **x == 0).map(|x| *x * 2);
     ///
     /// // Good
-    /// vec.iter().filter_map(|x| Some(*x * 2));
+    /// vec.iter().filter_map(|x| if *x == 0 {
+    ///     Some(*x * 2)
+    /// } else {
+    ///     None
+    /// });
     /// ```
     pub FILTER_MAP,
     pedantic,