fixed spelling in about.md app.md and basics.md

src/about.md

@@ -21,7 +21,7 @@ common tasks.
 The cookbook [index] contains the full list of recipes, organized into
 a number of sections: "basics", "encoding", "concurrency", etc.  The
 sections themselves are more or less ordered in progression, with
-later sections being more advanced, and occassionally building on
+later sections being more advanced, and occasionally building on
 concepts from earlier sections.
 
 Within the index, each section contains a list of recipes. The recipes

src/app.md

@@ -256,8 +256,8 @@ fn run() -> Result<()> {
 [![same_file-badge]][same_file] [![cat-filesystem-badge]][cat-filesystem]
 
 Use [`same_file::is_same_file`] to detect loops for a given path.
-For example, a loop could be created on a unix system via sym links:
-```
+For example, a loop could be created on a Unix system via symlinks:
+```bash
 mkdir -p /tmp/foo/bar/baz
 ln -s /tmp/foo/  /tmp/foo/bar/baz/qux
 ```
@@ -301,7 +301,7 @@ fn main() {
 
 [![walkdir-badge]][walkdir] [![cat-filesystem-badge]][cat-filesystem]
 
-Find recusively in the current directory duplicate filenames,
+Find recursively in the current directory duplicate filenames,
 printing them only once.
 
 ```rust,no_run
@@ -452,11 +452,11 @@ fn main() {
 
 [![glob-badge]][glob] [![cat-filesystem-badge]][cat-filesystem]
 
-Recursively find all png files in the current directory.
+Recursively find all PNG files in the current directory.
 In this case, the `**` pattern matches the current directory and all subdirectories.
 
 You can also use the `**` pattern for any directory, not just the current one.
-For example, `/media/**/*.png` would match all pngs in `media` and it's subdirectories.
+For example, `/media/**/*.png` would match all PNGs in `media` and it's subdirectories.
 
 ```rust,no_run
 # #[macro_use]

src/basics.md

@@ -120,7 +120,7 @@ fn decode(mut bytes: &[u8]) -> Result<Payload> {
 <a name="ex-rand"></a>
 ## Generate random numbers
 
-The [`rand`] crate provides a convenient source of psuedo-random numbers.
+The [`rand`] crate provides a convenient source of pseudo-random numbers.
 
 [![rand-badge]][rand] [![cat-science-badge]][cat-science]
 
@@ -583,7 +583,7 @@ fn main() {
 
 Extracts a sorted and deduplicated list of hashtags from a text.
 
-The hashtag regex given here only catches latin hashtags that start with a letter. The complete [twitter hashtag regex] is way more complicated.
+The hashtag regex given here only catches Latin hashtags that start with a letter. The complete [twitter hashtag regex] is way more complicated.
 
 ```rust
 extern crate regex;
@@ -616,8 +616,8 @@ fn main() {
 
 [![regex-badge]][regex] [![lazy_static-badge]][lazy_static] [![cat-text-processing-badge]][cat-text-processing]
 
-Replaces all occurences of the hyphenated british english date pattern `2013-01-15` 
-with its equivalent slashed american english date pattern `01/15/2013`.
+Replaces all occurrences of the hyphenated British English date pattern `2013-01-15` 
+with its equivalent slashed American English date pattern `01/15/2013`.
 
 The method [`Regex::replace_all`] replaces all occurrences of the whole regex. The
 `Replacer` trait helps to figure out the replacement string. This trait is implemented