dictionary: Add a few words aspell 0.60.7 considers new spellings

dictionary.txt

@@ -34,6 +34,7 @@ chYY
 config
 Config
 const
+constant's
 copyeditor
 couldn
 cratesio
@@ -62,6 +63,7 @@ doccratesio
 doesn
 Edsger
 else's
+emoji
 encodings
 enum
 Enum
@@ -78,6 +80,7 @@ Filename
 filesystem
 Filesystem
 formatter
+GitHub
 gitignore
 grapheme
 Grapheme
@@ -96,9 +99,12 @@ Hoare
 Hola
 homogenous
 html
+IEEE
 impl
+indices
 init
 instantiation
+internet
 InvalidDigit
 ioerror
 iokind
@@ -109,6 +115,7 @@ IpAddrKind
 irst
 isize
 iter
+JavaScript
 lang
 latin
 libc
@@ -139,6 +146,7 @@ NotFound
 null's
 OCaml
 offsetof
+online
 OptionalFloatingPointNumber
 OptionalNumber
 OsStr
@@ -162,6 +170,9 @@ randcrate
 READMEs
 rect
 redeclaring
+Refactoring
+refactor
+refactoring
 RefCell
 repr
 runtime
@@ -197,22 +208,29 @@ Submodules
 suboptimal
 subtree
 That'd
+test's
 TODO
 toml
 TOML
 tradeoff
 TrafficLight
 trpl
+tuple
+tuples
 typeof
 UFCS
 unary
 Unary
+Uninstalling
+uninstall
 unoptimized
 unsized
 unsynchronized
+username
 USERPROFILE
 usize
 UsState
+variable's
 Versioning
 wasn
 whitespace