fix typos

Author: SethTisue

experimental-backend.md

@@ -12,7 +12,7 @@ This gives you the chance to preview pieces of Scala 2.12 just by enabling some
 `-Ybackend:GenBCode` enables the new backend.
 
 GenBCode without any further compiler flags is a drop-in replacement for the current backend ("GenASM").
-The generated bytecode is binary compatible, altough not exactly the same; some instruction sequences may differ.
+The generated bytecode is binary compatible, although not exactly the same; some instruction sequences may differ.
 If you find a binary incompatibility, please [report an issue](https://issues.scala-lang.org/secure/Dashboard.jspa).
 
 ## Delambdafy-Method
@@ -22,7 +22,7 @@ If you find a binary incompatibility, please [report an issue](https://issues.sc
 Traditionally, the anonymous class generated for a lambda contains the lambda body in the `apply` method of the class.
 When using delambdafy-method, a method containing the lambda body is generated for each lambda, and the anonymous class delegates to this method.
 
-Delambdafy-method is a requiement for emitting lambdas in Java 8 style, as explained in detail in [this Gist by @retronym](https://gist.github.com/retronym/0178c212e4bacffed568).
+Delambdafy-method is a requirement for emitting lambdas in Java 8 style, as explained in detail in [this Gist by @retronym](https://gist.github.com/retronym/0178c212e4bacffed568).
 
 ## Target jvm-1.8
 
@@ -46,7 +46,7 @@ The Scala 2.11.7 compiler emits lambdas in Java 8 style (using `invokedynamic` a
   - `-target:jvm-1.8` is enabled
   - the scala-java8-compat library is on the compiler's classpath
 
-In an SBT project, this can be achieved using the following settins:
+In an SBT project, this can be achieved using the following settings:
 
     libraryDependencies += "org.scala-lang.modules" %% "scala-java8-compat" % "0.5.0"
 
@@ -64,4 +64,4 @@ As part of the new backend for Scala 2.12 we are developing a new inliner and by
 The inliner is already available in Scala 2.11.7 and can be enabled using the `-Yopt` compiler option.
 Check `-Yopt:help` to see the available optimizations.
 
-If you encounter a bug, please file an issue on this bugracker: https://github.com/scala-opt/scala/issues
+If you encounter a bug, please file an issue on this bugtracker: https://github.com/scala-opt/scala/issues