Python: fix ql alerts

Author: yoff

python/ql/lib/semmle/python/AstExtended.qll

@@ -167,7 +167,7 @@ class StringPart extends StringPart_, AstNode {
    * Gets the length of the content, that is the text between the prefix and the quote.
    * See `context` for obtaining the prefix and the quote.
    */
-  int getContentLenght() {
+  int getContentLength() {
     exists(string prefix, string quote | this.context(prefix, quote) |
       result = this.getText().length() - prefix.length() - quote.length()
     )

python/ql/lib/semmle/python/regexp/RegexTreeView.qll

@@ -230,7 +230,7 @@ module Impl implements RegexTreeViewSig {
       index > 0 and
       exists(int previousOffset | previousOffset = this.getPartOffset(index - 1) |
         result =
-          previousOffset + re.(StrConst).getImplicitlyConcatenatedPart(index - 1).getContentLenght()
+          previousOffset + re.(StrConst).getImplicitlyConcatenatedPart(index - 1).getContentlength()
       )
     }
 
@@ -245,7 +245,7 @@ module Impl implements RegexTreeViewSig {
         // Example:
         // re.compile('...' r"""...this..""")
         // - `start` is the offset from `(` to `this` as counted after concatenating all parts.
-        // - we subtract the lenght of the previous `StringPart`s, `'...'`, to know how far into this `StringPart` we go.
+        // - we subtract the length of the previous `StringPart`s, `'...'`, to know how far into this `StringPart` we go.
         // - as the prefix 'r"""' is part of the `StringPart`, `this` is found that much further in.
         localOffset = start - this.getPartOffset(index) + prefixLength
       )