Fix many typos in docs and comments

This commit corrects many typos found in scaladocs, comments and
documentation. It should reduce a bit number of PRs which fix one
typo.

There are no changes in the 'real' code except one corrected name of
a JUnit test method and some error messages in exceptions. In the case
of typos in other method or field names etc., I just skipped them.

Obviously this commit doesn't fix all existing typos. I just generated
in IntelliJ the list of potential typos and looked through it quickly.

5 files changed, 6 insertions, 6 deletions

diff --git a/spec/04-basic-declarations-and-definitions.md b/spec/04-basic-declarations-and-definitions.md
index aca1c63d22..65d79dd5f4 100644
--- a/spec/04-basic-declarations-and-definitions.md
+++ b/spec/04-basic-declarations-and-definitions.md
@@ -631,7 +631,7 @@ For every parameter $p_{i,j}$ with a default argument a method named
 expression. Here, $n$ denotes the parameter's position in the method
 declaration. These methods are parametrized by the type parameter clause
 `[$\mathit{tps}\,$]` and all value parameter clauses
-`($\mathit{ps}_1$)$\ldots$($\mathit{ps}_{i-1}$)` preceeding $p_{i,j}$.
+`($\mathit{ps}_1$)$\ldots$($\mathit{ps}_{i-1}$)` preceding $p_{i,j}$.
 The `$f\$$default$\$$n` methods are inaccessible for
 user programs.
 
diff --git a/spec/05-classes-and-objects.md b/spec/05-classes-and-objects.md
index ef854b2abb..fd20d6ae2c 100644
--- a/spec/05-classes-and-objects.md
+++ b/spec/05-classes-and-objects.md
@@ -128,7 +128,7 @@ consists of the following steps.
   occurrence in the linearization.
 - Finally the statement sequence $\mathit{stats}\,$ is evaluated.
 
-###### Delayed Initializaton
+###### Delayed Initialization
 The initialization code of an object or class (but not a trait) that follows
 the superclass
 constructor invocation and the mixin-evaluation of the template's base
diff --git a/spec/06-expressions.md b/spec/06-expressions.md
index afd1492744..da41651a74 100644
--- a/spec/06-expressions.md
+++ b/spec/06-expressions.md
@@ -666,7 +666,7 @@ followed by operators starting with ``|`', etc.
 
 There's one exception to this rule, which concerns
 [_assignment operators_](#assignment-operators).
-The precedence of an assigment operator is the same as the one
+The precedence of an assignment operator is the same as the one
 of simple assignment `(=)`. That is, it is lower than the
 precedence of any other operator.
 
@@ -1761,7 +1761,7 @@ trait Dynamic {
 ```
 
 Assume a selection of the form $e.x$ where the type of $e$ conforms to `scala.Dynamic`.
-Further assuming the selection is not followed by any function arguments, such an expression can be rewitten under the conditions given [here](#implicit-conversions) to:
+Further assuming the selection is not followed by any function arguments, such an expression can be rewritten under the conditions given [here](#implicit-conversions) to:
 
 ```scala
 $e$.applyDynamic("$x$")
diff --git a/spec/08-pattern-matching.md b/spec/08-pattern-matching.md
index 3538457b5c..e75bddc096 100644
--- a/spec/08-pattern-matching.md
+++ b/spec/08-pattern-matching.md
@@ -609,7 +609,7 @@ case class If[T](c: Term[Boolean],
 
 There are terms to represent numeric literals, incrementation, a zero
 test, and a conditional. Every term carries as a type parameter the
-type of the expression it representes (either `Int` or `Boolean`).
+type of the expression it represents (either `Int` or `Boolean`).
 
 A type-safe evaluator for such terms can be written as follows.
 
diff --git a/spec/09-top-level-definitions.md b/spec/09-top-level-definitions.md
index 847fab548d..e3185d8b7d 100644
--- a/spec/09-top-level-definitions.md
+++ b/spec/09-top-level-definitions.md
@@ -159,7 +159,7 @@ The `main` method of a program can be directly defined in the
 object, or it can be inherited. The scala library defines a special class
 `scala.App` whose body acts as a `main` method.
 An objects $m$ inheriting from this class is thus a program,
-which executes the initializaton code of the object $m$.
+which executes the initialization code of the object $m$.
 
 ###### Example
 The following example will create a hello world program by defining